android 轻量级的亲善的交互对话框库,EasyDialog，实现已详细标注

转载请注明出处：王亟亟的大牛之路

Git上看到的一个蛮清爽的一个Dialog介绍给大家，Git地址
实现效果

个人感觉做的还是满Q弹的
如何使用？

 compile 'com.github.michaelye.easydialog:easydialog:1.0'

其实也就是一个类和几个layout文件，建议直接copy进你的项目还更方便点。

项目结构：

因为标注的很清晰，直接就贴代码看，不做什么解释了，如有什么不理解可以留言可以回答你的问题

核心类EasyDialog

public class EasyDialog{    private Context context;    /**     * 内容在三角形上面     */    public static final int GRAVITY_TOP = 0;    /**     * 内容在三角形下面     */    public static final int GRAVITY_BOTTOM = 1;    /**     * 对话框本身     */    private Dialog dialog;    /**     * 坐标     */    private int[] location;    /**     * 提醒框位置     */    private int gravity;    /**     * 外面传递进来的View     */    private View contentView;    /**     * 三角形     */    private ImageView ivTriangle;    /**     * 用来放外面传递进来的View     */    private LinearLayout llContent;    /**     * 触摸外面，是否关闭对话框     */    private boolean touchOutsideDismiss;    /**     * 提示框所在的容器     */    private RelativeLayout rlOutsideBackground;    public EasyDialog(Context context)    {        initDialog(context);    }    private void initDialog(final Context context)    {        this.context = context;        LayoutInflater layoutInflater = ((Activity) context).getLayoutInflater();        View dialogView = layoutInflater.inflate(R.layout.layout_dialog, null);        ViewTreeObserver viewTreeObserver = dialogView.getViewTreeObserver();        viewTreeObserver.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener()        {            @Override            public void onGlobalLayout()            {                //当View可以获取宽高的时候，设置view的位置                relocation(location);            }        });        rlOutsideBackground = (RelativeLayout) dialogView.findViewById(R.id.rlOutsideBackground);        rlOutsideBackground.setOnTouchListener(new View.OnTouchListener()        {            @Override            public boolean onTouch(View v, MotionEvent event)            {                if (touchOutsideDismiss && dialog != null)                {                    onDialogDismiss();                }                return false;            }        });        ivTriangle = (ImageView) dialogView.findViewById(R.id.ivTriangle);        llContent = (LinearLayout) dialogView.findViewById(R.id.llContent);        dialog = new Dialog(context, isFullScreen() ? android.R.style.Theme_Translucent_NoTitleBar_Fullscreen : android.R.style.Theme_Translucent_NoTitleBar);        dialog.setContentView(dialogView);        animatorSetForDialogShow = new AnimatorSet();        animatorSetForDialogDismiss = new AnimatorSet();        objectAnimatorsForDialogShow = new ArrayList<>();        objectAnimatorsForDialogDismiss = new ArrayList<>();        ini();    }    /**     * 初始化默认值     */    private void ini()    {        this.setLocation(new int[]{0, 0})                .setGravity(GRAVITY_BOTTOM)                .setTouchOutsideDismiss(true)                .setOutsideColor(Color.TRANSPARENT)                .setBackgroundColor(Color.BLUE)                .setMatchParent(true)                .setMarginLeftAndRight(24, 24);    }    /**     * 设置提示框中要显示的内容     */    public EasyDialog setLayout(View layout)    {        if (layout != null)        {            this.contentView = layout;        }        return this;    }    /**     * 设置提示框中要显示的内容的布局Id     */    public EasyDialog setLayoutResourceId(int layoutResourceId)    {        View view = ((Activity) context).getLayoutInflater().inflate(layoutResourceId, null);        setLayout(view);        return this;    }    /**     * 设置三角形所在的位置     */    public EasyDialog setLocation(int[] location)    {        this.location = location;        return this;    }    /**     * 设置三角形所在的位置     * location.x坐标值为attachedView所在屏幕位置的中心     * location.y坐标值依据当前的gravity，如果gravity是top，则为控件上方的y值，如果是bottom，则为控件的下方的y值     * <p/>     *     * @param attachedView 在哪个View显示提示信息     */    public EasyDialog setLocationByAttachedView(View attachedView)    {        if (attachedView != null)        {            this.attachedView = attachedView;            int[] attachedViewLocation = new int[2];            attachedView.getLocationOnScreen(attachedViewLocation);            attachedViewLocation[0] = attachedViewLocation[0] + attachedView.getWidth() / 2;            switch (gravity)            {                case GRAVITY_BOTTOM:                    attachedViewLocation[1] = attachedViewLocation[1] + attachedView.getHeight();                    break;                case GRAVITY_TOP:                    break;            }            setLocation(attachedViewLocation);        }        return this;    }    /**     * 对话框所依附的View     * */    private View attachedView = null;    /**     * 设置显示的内容在上方还是下方，如果设置错误，默认是在下方     */    public EasyDialog setGravity(int gravity)    {        if (gravity != GRAVITY_BOTTOM && gravity != GRAVITY_TOP)        {            gravity = GRAVITY_BOTTOM;        }        this.gravity = gravity;        switch (this.gravity)        {            case GRAVITY_BOTTOM:                ivTriangle.setBackgroundResource(R.drawable.triangle_bottom);                break;            case GRAVITY_TOP:                ivTriangle.setBackgroundResource(R.drawable.triangle_top);                break;        }        llContent.setBackgroundResource(R.drawable.round_corner_bg);        if(attachedView != null)//如果用户调用setGravity()之前就调用过setLocationByAttachedView，需要再调用一次setLocationByAttachedView        {            this.setLocationByAttachedView(attachedView);        }        this.setBackgroundColor(backgroundColor);        return this;    }    /**     * 设置是否填充屏幕，如果不填充就适应布局内容的宽度，显示内容的位置会尽量随着三角形的位置居中     */    public EasyDialog setMatchParent(boolean matchParent)    {        ViewGroup.LayoutParams layoutParams = llContent.getLayoutParams();        layoutParams.width = matchParent ? ViewGroup.LayoutParams.MATCH_PARENT : ViewGroup.LayoutParams.WRAP_CONTENT;        llContent.setLayoutParams(layoutParams);        return this;    }    /**     * 距离屏幕左右的边距     */    public EasyDialog setMarginLeftAndRight(int left, int right)    {        RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) llContent.getLayoutParams();        layoutParams.setMargins(left, 0, right, 0);        llContent.setLayoutParams(layoutParams);        return this;    }    /**     * 设置触摸对话框外面，对话框是否消失     */    public EasyDialog setTouchOutsideDismiss(boolean touchOutsideDismiss)    {        this.touchOutsideDismiss = touchOutsideDismiss;        return this;    }    /**     * 设置提醒框外部区域的颜色     */    public EasyDialog setOutsideColor(int color)    {        rlOutsideBackground.setBackgroundColor(color);        return this;    }    private int backgroundColor;    /**     * 设置对话框的颜色     * <p/>     * 三角形的图片是layer-list里面嵌套一个RotateDrawable，在设置颜色的时候需要特别处理     * http://stackoverflow.com/questions/24492000/set-color-of-triangle-on-run-time     * http://stackoverflow.com/questions/16636412/change-shape-solid-color-at-runtime-inside-drawable-xml-used-as-background     */    public EasyDialog setBackgroundColor(int color)    {        backgroundColor = color;        LayerDrawable drawableTriangle = (LayerDrawable) ivTriangle.getBackground();        GradientDrawable shapeTriangle = (GradientDrawable) (((RotateDrawable) drawableTriangle.findDrawableByLayerId(R.id.shape_id)).getDrawable());        if (shapeTriangle != null)        {            shapeTriangle.setColor(color);        }        else        {            Toast.makeText(context, "shape is null", Toast.LENGTH_SHORT).show();        }        GradientDrawable drawableRound = (GradientDrawable) llContent.getBackground();        if (drawableRound != null)        {            drawableRound.setColor(color);        }        return this;    }    /**     * 显示提示框     */    public EasyDialog show()    {        if (dialog != null)        {            if (contentView == null)            {                throw new RuntimeException("您是否未调用setLayout()或者setLayoutResourceId()方法来设置要显示的内容呢？");            }            llContent.addView(contentView);            dialog.show();            onDialogShowing();        }        return this;    }    /**     * 显示对话框的View的parent，如果想自己写动画，可以获取这个实例来写动画     *     * */    public View getTipViewInstance()    {        return rlOutsideBackground.findViewById(R.id.rlParentForAnimate);    }    /**横向*/    public static final int DIRECTION_X = 0;    /**纵向*/    public static final int DIRECTION_Y = 1;    /**     * 水平动画     *     * @param direction 动画的方向     * @param duration 动画执行的时间长度     * @param values 动画移动的位置     * */    public EasyDialog setAnimationTranslationShow(int direction, int duration, float... values)    {        return setAnimationTranslation(true, direction, duration, values);    }    /**     * 水平动画     *     * @param direction 动画的方向     * @param duration 动画执行的时间长度     * @param values 动画移动的位置     * */    public EasyDialog setAnimationTranslationDismiss(int direction, int duration, float... values)    {        return setAnimationTranslation(false, direction, duration, values);    }    private EasyDialog setAnimationTranslation(boolean isShow, int direction, int duration, float... values)    {        if(direction != DIRECTION_X && direction != DIRECTION_Y)        {            direction = DIRECTION_X;        }        String propertyName = "";        switch (direction)        {            case DIRECTION_X:                propertyName = "translationX";                break;            case DIRECTION_Y:                propertyName = "translationY";                break;        }        ObjectAnimator animator = ObjectAnimator.ofFloat(rlOutsideBackground.findViewById(R.id.rlParentForAnimate), propertyName, values)                .setDuration(duration);        if(isShow)        {            objectAnimatorsForDialogShow.add(animator);        }        else        {            objectAnimatorsForDialogDismiss.add(animator);        }        return this;    }    /**     * 对话框出现时候的渐变动画     *     * @param duration 动画执行的时间长度     * @param values 动画移动的位置     * */    public EasyDialog setAnimationAlphaShow(int duration, float... values)    {        return setAnimationAlpha(true, duration, values);    }    /**     * 对话框消失时候的渐变动画     *     * @param duration 动画执行的时间长度     * @param values 动画移动的位置     * */    public EasyDialog setAnimationAlphaDismiss(int duration, float... values)    {        return setAnimationAlpha(false, duration, values);    }    private EasyDialog setAnimationAlpha(boolean isShow, int duration, float... values)    {        ObjectAnimator animator = ObjectAnimator.ofFloat(rlOutsideBackground.findViewById(R.id.rlParentForAnimate), "alpha", values).setDuration(duration);        if(isShow)        {            objectAnimatorsForDialogShow.add(animator);        }        else        {            objectAnimatorsForDialogDismiss.add(animator);        }        return this;    }    private AnimatorSet animatorSetForDialogShow;    private AnimatorSet animatorSetForDialogDismiss;    private List<Animator> objectAnimatorsForDialogShow;    private List<Animator> objectAnimatorsForDialogDismiss;    private void onDialogShowing()    {        if(animatorSetForDialogShow != null && objectAnimatorsForDialogShow != null && objectAnimatorsForDialogShow.size() > 0)        {            animatorSetForDialogShow.playTogether(objectAnimatorsForDialogShow);            animatorSetForDialogShow.start();        }        //TODO 缩放的动画效果不好，不能从控件所在的位置开始缩放//        ObjectAnimator.ofFloat(rlOutsideBackground.findViewById(R.id.rlParentForAnimate), "scaleX", 0.3f, 1.0f).setDuration(500).start();//        ObjectAnimator.ofFloat(rlOutsideBackground.findViewById(R.id.rlParentForAnimate), "scaleY", 0.3f, 1.0f).setDuration(500).start();    }    private void onDialogDismiss()    {        if(animatorSetForDialogDismiss.isRunning())        {            return;        }        if(animatorSetForDialogDismiss != null && objectAnimatorsForDialogDismiss != null && objectAnimatorsForDialogDismiss.size() > 0)        {            animatorSetForDialogDismiss.playTogether(objectAnimatorsForDialogDismiss);            animatorSetForDialogDismiss.start();            animatorSetForDialogDismiss.addListener(new Animator.AnimatorListener()            {                @Override                public void onAnimationStart(Animator animation)                {                }                @Override                public void onAnimationEnd(Animator animation)                {                    dialog.dismiss();                }                @Override                public void onAnimationCancel(Animator animation)                {                }                @Override                public void onAnimationRepeat(Animator animation)                {                }            });        }        else        {            dialog.dismiss();        }    }    /**     * 关闭提示框     */    public void dismiss()    {        if (dialog != null && dialog.isShowing())        {            onDialogDismiss();        }    }    /**     * 根据x，y，重新设置控件的位置     * <p/>     * 因为setX setY为0的时候，都是在状态栏以下的，所以app不是全屏的话，需要扣掉状态栏的高度     */    private void relocation(int[] location)    {        ivTriangle.setX(location[0] - ivTriangle.getWidth() / 2);        ivTriangle.setY(location[1] - ivTriangle.getHeight() / 2 - (isFullScreen() ? 0.0f : getStatusBarHeight()));//因为三角形是通过XML绘制出来的，可以到activity_tip_overlay.xml中把三角形的那个ImageView背景设置一下，就知道什么情况了。所以需要减掉一半的高度        switch (gravity)        {            case GRAVITY_BOTTOM:                llContent.setY(location[1] - ivTriangle.getHeight() / 2 - (isFullScreen() ? 0.0f : getStatusBarHeight()) + ivTriangle.getHeight());                break;            case GRAVITY_TOP:                llContent.setY(location[1] - llContent.getHeight() - (isFullScreen() ? 0.0f : getStatusBarHeight()) - ivTriangle.getHeight() / 2);                break;        }        //显示内容的区域往三角形靠拢        int triangleCenterX = (int)(ivTriangle.getX() + ivTriangle.getWidth()/2);//三角形的中心点        int contentWidth = llContent.getWidth();        int rightMargin = getScreenWidth() - triangleCenterX;//三角形中心距离屏幕右边的距离        int leftMargin = getScreenWidth() - rightMargin;//三角形中心距离屏幕左边的距离        RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) llContent.getLayoutParams();        int availableLeftMargin = leftMargin - layoutParams.leftMargin;//左边可用的距离        int availableRightMargin = rightMargin - layoutParams.rightMargin;//右边可用的距离        int x = 0;        if(contentWidth/2 <= availableLeftMargin && contentWidth/2 <= availableRightMargin)//左右两边有足够的距离        {            x = triangleCenterX - contentWidth/2;        }        else        {            if(availableLeftMargin <= availableRightMargin)//判断三角形在屏幕中心的左边            {                x = layoutParams.leftMargin;            }            else//三角形在屏幕中心的右边            {                x = getScreenWidth() - (contentWidth + layoutParams.rightMargin);            }        }        llContent.setX(x);    }    /**     * 获取屏幕的宽度     * */    private int getScreenWidth()    {        DisplayMetrics metrics = context.getResources().getDisplayMetrics();        return metrics.widthPixels;    }    /**     * 获取状态栏的高度     */    private int getStatusBarHeight()    {        int result = 0;        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");        if (resourceId > 0)        {            result = context.getResources().getDimensionPixelSize(resourceId);        }        return result;    }    /**     * 判断下当前要显示对话框的Activity是否是全屏     */    public boolean isFullScreen()    {        int flg = ((Activity) context).getWindow().getAttributes().flags;        boolean flag = false;        if ((flg & 1024) == 1024)        {            flag = true;        }        return flag;    }    /**     * 设置是否可以按返回按钮取消     * */    public EasyDialog setCancelable(boolean cancelable)    {        dialog.setCancelable(cancelable);        return this;    }}

MainActivity

public class MainActivity extends ActionBarActivity implements View.OnClickListener{    private RelativeLayout rlBackground;    private Button btnTopLeft;    private Button btnTopRight;    private Button btnMiddleTop;    private Button btnMiddleBottom;    private Button btnBottomLeft;    private Button btnBottomRight;    @Override    protected void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        iniComponent();    }    private void iniComponent()    {        rlBackground = (RelativeLayout)findViewById(R.id.rlBackground);        btnTopLeft = (Button) findViewById(R.id.btnTopLeft);        btnTopRight = (Button) findViewById(R.id.btnTopRight);        btnMiddleTop = (Button) findViewById(R.id.btnMiddleTop);        btnMiddleBottom = (Button) findViewById(R.id.btnMiddleBottom);        btnBottomLeft = (Button) findViewById(R.id.btnBottomLeft);        btnBottomRight = (Button) findViewById(R.id.btnBottomRight);        btnTopLeft.setOnClickListener(this);        btnTopRight.setOnClickListener(this);        btnMiddleTop.setOnClickListener(this);        btnMiddleBottom.setOnClickListener(this);        btnBottomLeft.setOnClickListener(this);        btnBottomRight.setOnClickListener(this);        rlBackground.setOnTouchListener(new View.OnTouchListener()        {            @Override            public boolean onTouch(View v, MotionEvent event)            {                int[] location = new int[2];                location[0] = (int)event.getX();                location[1] = (int)event.getY();                location[1] = location[1] + getActionBarHeight() + getStatusBarHeight();                Toast.makeText(MainActivity.this, "x:" + location[0] + " y:" + location[1], Toast.LENGTH_SHORT).show();                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_content_horizontal)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_black))                        .setLocation(location)                        .setGravity(EasyDialog.GRAVITY_TOP)                        .setTouchOutsideDismiss(true)                        .setMatchParent(false)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_gray))                        .show();                return false;            }        });    }    @Override    public void onClick(View v)    {        switch (v.getId())        {            case R.id.btnTopLeft:                View view = this.getLayoutInflater().inflate(R.layout.layout_tip_content_horizontal, null);                new EasyDialog(MainActivity.this)                        .setLayout(view)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_black))                        .setLocationByAttachedView(btnTopLeft)                        .setGravity(EasyDialog.GRAVITY_BOTTOM)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_X, 1000, -600, 100, -50, 50, 0)                        .setAnimationAlphaShow(1000, 0.3f, 1.0f)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_X, 500, -50, 800)                        .setAnimationAlphaDismiss(500, 1.0f, 0.0f)                        .setTouchOutsideDismiss(true)                        .setMatchParent(true)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_trans))                        .show();                break;            case R.id.btnTopRight:                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_image_text)                        .setGravity(EasyDialog.GRAVITY_BOTTOM)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_black))                        .setLocationByAttachedView(btnTopRight)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_X, 350, 400, 0)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_X, 350, 0, 400)                        .setTouchOutsideDismiss(true)                        .setMatchParent(false)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_trans))                        .show();                break;            case R.id.btnMiddleTop:                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_content_horizontal)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_blue))                        .setLocationByAttachedView(btnMiddleTop)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_Y, 1000, -800, 100, -50, 50, 0)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_Y, 500, 0, -800)                        .setGravity(EasyDialog.GRAVITY_TOP)                        .setTouchOutsideDismiss(true)                        .setMatchParent(false)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_pink))                        .show();                break;            case R.id.btnMiddleBottom:                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_content_horizontal)                        .setGravity(EasyDialog.GRAVITY_BOTTOM)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_brown))                        .setLocationByAttachedView(btnMiddleBottom)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_Y, 1000, 800, -100, -50, 50, 0)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_Y, 500, 0, 800)                        .setAnimationAlphaShow(1000, 0.3f, 1.0f)                        .setTouchOutsideDismiss(true)                        .setMatchParent(true)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_gray))                        .show();                break;            case R.id.btnBottomLeft:                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_text)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_pink))                        .setLocationByAttachedView(btnBottomLeft)                        .setGravity(EasyDialog.GRAVITY_TOP)                        .setAnimationAlphaShow(600, 0.0f, 1.0f)                        .setAnimationAlphaDismiss(600, 1.0f, 0.0f)                        .setTouchOutsideDismiss(true)                        .setMatchParent(false)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_trans))                        .show();                break;            case R.id.btnBottomRight:                new EasyDialog(MainActivity.this)                        .setLayoutResourceId(R.layout.layout_tip_image_text)                        .setBackgroundColor(MainActivity.this.getResources().getColor(R.color.background_color_yellow))                        .setLocationByAttachedView(btnBottomRight)                        .setGravity(EasyDialog.GRAVITY_TOP)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_X, 300, 400, 0)                        .setAnimationTranslationShow(EasyDialog.DIRECTION_Y, 300, 400, 0)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_X, 300, 0, 400)                        .setAnimationTranslationDismiss(EasyDialog.DIRECTION_Y, 300, 0, 400)                        .setTouchOutsideDismiss(true)                        .setMatchParent(false)                        .setMarginLeftAndRight(24, 24)                        .setOutsideColor(MainActivity.this.getResources().getColor(R.color.outside_color_trans))                        .show();                break;        }    }    private int getStatusBarHeight()    {        int result = 0;        int resourceId = this.getResources().getIdentifier("status_bar_height", "dimen", "android");        if (resourceId > 0)        {            result = this.getResources().getDimensionPixelSize(resourceId);        }        return result;    }    private int getActionBarHeight()    {        return this.getSupportActionBar().getHeight();    }}

布局文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"                android:id="@+id/rlBackground"                android:layout_width="match_parent"                android:layout_height="match_parent"    >    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_marginTop="20dp"        >        <Button            android:id="@+id/btnTopLeft"            android:text="Click Me"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentLeft="true"            android:background="#CCCCCC"            />        <Button            android:id="@+id/btnTopRight"            android:text="Click Me"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentRight="true"            android:background="#CCCCCC"            />    </RelativeLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:orientation="vertical">        <Button            android:id="@+id/btnMiddleTop"            android:text="Click Me"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:background="#CCCCCC"            />        <Button            android:id="@+id/btnMiddleBottom"            android:text="Click Me"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:layout_marginTop="20dp"            android:background="#CCCCCC"            />    </LinearLayout>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_marginBottom="10dip"        android:orientation="horizontal">        <Button            android:id="@+id/btnBottomLeft"            android:text="Click Me"            android:layout_weight="1"            android:layout_width="wrap_content"            android:layout_margin="10dip"            android:layout_height="wrap_content"            android:background="#CCCCCC"            />        <Button            android:id="@+id/btnBottomRight"            android:text="Click Me"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_margin="10dip"            android:background="#CCCCCC"            />    </LinearLayout></RelativeLayout>

具体的东西可以直接看源码，直接可以RUN并没有什么 问题
源码地址：http://yunpan.cn/cmLmBhbNuVv9z 访问密码 b068

最近比较事多，文章内容不是太深刻，观众老爷们见谅哈！！！