ComponnentName属性应用实例
/Chapter06_Intent_ComponentName/src/com/amaker/ch06/app/MainActivity.java
- 代码
- package com.amaker.ch06.app;
- import android.app.Activity;
- import android.content.ComponentName;
- import android.content.Intent;
- import android.os.Bundle;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
- /**
- * 测试Intent的ComponentName属性
- */
- public class MainActivity extends Activity {
- private Button btn;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- // 设置视图布局
- setContentView(R.layout.main);
- // 实例化Button
- btn = (Button)findViewById(R.id.myButton01);
- // 添加单击监听器
- btn.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- // 实例化组件名称
- ComponentName cn = new ComponentName(MainActivity.this, "com.amaker.ch06.app1.MyActivity");
- // 实例化Intent
- Intent intent = new Intent();
- // 为Intent设置组件名称属性
- intent.setComponent(cn);
- // 启动Activity
- startActivity(intent);
- }
- });
- }
- }
/Chapter06_Intent_ComponentName/src/com/amaker/ch06/app1/MyActivity.java
- 代码
- package com.amaker.ch06.app1;
- import android.app.Activity;
- import android.content.ComponentName;
- import android.content.Intent;
- import android.os.Bundle;
- import android.widget.TextView;
- import com.amaker.ch06.app.R;
- /**
- * 测试Intent的ComponentName属性
- */
- public class MyActivity extends Activity {
- // 声明TextView
- private TextView tv;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- // 设置视图布局
- super.onCreate(savedInstanceState);
- setContentView(R.layout.my_layout);
- // 获得Intent
- Intent intent = this.getIntent();
- // 获得组件名称对象
- ComponentName cn = intent.getComponent();
- // 获得包名称
- String packageName = cn.getPackageName();
- // 获得类名称
- String className = cn.getClassName();
- // 实例化TextView
- tv = (TextView)findViewById(R.id.TextView01);
- // 显示
- tv.setText("组件包名称:"+packageName+"\n"+"组件类名称:"+className);
- }
- }
/Chapter06_Intent_ComponentName/res/layout/main.xml
- 代码
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <Button
- android:text="测试Intent的组件名称属性"
- android:id="@+id/myButton01"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"></Button>
- </LinearLayout>
/Chapter06_Intent_ComponentName/res/layout/my_layout.xml
- 代码
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"
- android:layout_width="fill_parent"
- android:layout_height="fill_parent"
- >
- <TextView
- android:text="@+id/TextView01"
- android:id="@+id/TextView01"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"></TextView>
- </LinearLayout>
本文转自linzheng 51CTO博客,原文链接:http://blog.51cto.com/linzheng/1080676