Intent的Data和Type和Flag属性-amdroid学习之旅（五十一）

Data属性介绍

使用Data和Action属性启动系统Activity

代码示例

public class MainActivity extends Activity{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void btn(View view){
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        String data  = "http://www.baidu.com";
        Uri dataUri = Uri.parse(data);
        intent.setData(dataUri);
        startActivity(intent);
    }
    public void edit(View view){
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_EDIT);
        String data  = "content://com.android.contacts/contacts/1";
        Uri dataUri = Uri.parse(data);
        intent.setData(dataUri);
        startActivity(intent);
    }
   public void call(View view){
       Intent intent = new Intent();
       intent.setAction(Intent.ACTION_DIAL);
       String data  = "tel:18710849943";
       Uri dataUri = Uri.parse(data);
       intent.setData(dataUri);
       startActivity(intent);
   }
}

布局代码

<?xml version="1.0" encoding="utf-8"?>
<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"
    >
  <Button
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:id="@+id/btn"
      android:text="btn"/>
    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/btnEdit"
        android:text="edit"/>
    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/call"
        android:text="call"/>

</LinearLayout>

Flag属性