Android 继承DialogFragment弹出dialog对话框1

相信现在Android软件开发员，都经常用到这种方式弹出对话框的。Android继承DialogFragment弹出dialog对话框，这样弹出有很多可以灵活处理地方，想什么启动，什么时候数据接口返回都可以，有自已layout布局，生命周期。下面看看我写demo。

本文代码下载：请点击这里

转载请注明出处： http://blog.csdn.net/qq_16064871

一、MainActivity

package com.example.fragmentdialogdemo;import com.example.fragmentdialogdemo.TestDialog.onTestListener;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends FragmentActivity implements OnClickListener,		onTestListener {	private String mstrName = "";	private String mstrHigh = "";	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		initUI();	}	private void initUI() {		Button buttonTest = (Button) findViewById(R.id.buttonTest);		buttonTest.setOnClickListener(this);	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		getMenuInflater().inflate(R.menu.main, menu);		return true;	}	// 接口回调的函数	@Override	public void onTestListener(int uniqueIdentifier, String strName,			String strHigh) {		if (uniqueIdentifier == 1) {			Toast.makeText(getApplicationContext(),					"姓名:" + strName + ",身高:" + strHigh, Toast.LENGTH_LONG)					.show();			TextView textView1 = (TextView) findViewById(R.id.textView1);			textView1.setText("姓名:" + strName + ",身高:" + strHigh);		}		mstrName = strName;		mstrHigh = strHigh;	}	@Override	public void onClick(View arg0) {		switch (arg0.getId()) {		case R.id.buttonTest:			// 实例化TestDialog,可以传参数进去,例如标题,或者其他参数,还有一个唯一码.			TestDialog dialog = new TestDialog().newInstance("请输入", 1,					mstrName, mstrHigh);			dialog.show(this.getSupportFragmentManager(), "TestDialog");			break;		default:			break;		}	}}

二、TestDialog

package com.example.fragmentdialogdemo;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.os.Bundle;import android.support.v4.app.DialogFragment;import android.view.View;import android.widget.Button;import android.widget.EditText;public class TestDialog extends DialogFragment {	// mUniqueFlag作用是唯一码,可以使返回时做判断	private int mUniqueFlag = -1;	private onTestListener mOnListener;	private EditText meditTextName, meditTextHigh;	protected Button mButtonPositive;	/**	 * 新建实例	 * 	 * @param title	 * @param unique	 * @param strName	 * @param strHigh	 * @return	 */	public static TestDialog newInstance(String title, int unique,			String strName, String strHigh) {		TestDialog tDialog = new TestDialog();		Bundle args = new Bundle();		args.putString("SelectTemplateTitle", title);		args.putInt("MultipleTemplate", unique);		args.putString("TemplateName", strName);		args.putString("TemplateHigh", strHigh);		tDialog.setArguments(args);		return tDialog;	}	public interface onTestListener {		/**		 * 		 * @param uniqueIdentifier		 *            唯一标识		 * @param strName		 * @param strHigh		 */		public abstract void onTestListener(int uniqueIdentifier,				String strName, String strHigh);	}	// 旋转时候保存	@Override	public void onSaveInstanceState(Bundle outState) {		super.onSaveInstanceState(outState);		outState.putString("InputName", meditTextName.getText().toString());		outState.putString("InputHigh", meditTextHigh.getText().toString());	}	@Override	public Dialog onCreateDialog(Bundle saveInstanceState) {		String title = getArguments().getString("SelectTemplateTitle");		mUniqueFlag = getArguments().getInt("MultipleTemplate");		AlertDialog.Builder Builder = new AlertDialog.Builder(getActivity())				.setTitle(title)				.setPositiveButton("确定", new DialogInterface.OnClickListener() {					@Override					public void onClick(DialogInterface dialog, int which) {						// 触发数据回调						if (mOnListener != null)							mOnListener.onTestListener(mUniqueFlag,									meditTextName.getText().toString(),									meditTextHigh.getText().toString());					}				}).setNegativeButton("取消", null);		// 添加xml布局		View view = getActivity().getLayoutInflater().inflate(				R.layout.test_dialog, null);		setupUI(view);		// 旋转后,恢复数据		if (saveInstanceState != null) {			String strName = saveInstanceState.getString("InputName");			if (strName != null)				meditTextName.setText(strName);			String strHigh = saveInstanceState.getString("InputHigh");			if (strHigh != null)				meditTextHigh.setText(strHigh);		}		Builder.setView(view);		//创建对话框		AlertDialog dialog = (AlertDialog) Builder.create();		return dialog;	}	private void setupUI(View view) {		if (view == null)			return;		String strName = getArguments().getString("TemplateName");		String strHigh = getArguments().getString("TemplateHigh");		meditTextName = (EditText) view.findViewById(R.id.editTextName);		meditTextHigh = (EditText) view.findViewById(R.id.editTextHigh);		meditTextName.setText(strName);		meditTextHigh.setText(strHigh);	}	// onAttach是关联activity的,用接口回调	@Override	public void onAttach(Activity activity) {		super.onAttach(activity);		try {			mOnListener = (onTestListener) activity;		} catch (ClassCastException e) {			dismiss();		}	}}

三、activity的xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView1"        android:layout_width="match_parent"        android:layout_height="80dp"         android:gravity="center"        android:textSize="18sp"        android:text="点击button" />    <Button        android:id="@+id/buttonTest"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Button" /></LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView1"        android:layout_width="match_parent"        android:layout_height="80dp"         android:gravity="center"        android:textSize="18sp"        android:text="点击button" />    <Button        android:id="@+id/buttonTest"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Button" /></LinearLayout>

五、需要注意事项，关于这样使用版本问题

主要是sdk版本的问题，因为Fragment是在3.0提出的，为了兼容低版本，需要引入一个android-support-v4.jar，但是在实例化 FragmentManager时，不能用getFragmentManager()这个方法。如果找不到这个getFragmentManager()这个方法，就如下解决。

解决办法：

1、引入一个android-support-v4.jar

2、需要实例化的activity必须 extends FragmentActivity 

3、用this.getSupportFragmentManager();来替代getFragmentManager()

也可以主要有上面我写的例子，也有这方面的原因。注意导入jar包。

六、效果图如下

到这里就结束了，欢迎交流学习。

本文代码下载：请点击这里

转载请注明出处： http://blog.csdn.net/qq_16064871

1楼u0100288694小时前

未来的路是不会平坦的，这是这样才会很精彩。