android Intent类

1）利用Inent监听应用程序的安装、替换、删除等

与包相关的Intent：

Intent.ACTION_PACKAGE_INSTALL

Intent.ACTION_PACKAGE_ADDED

Intent.ACTION_PACKAGE_REPLACED

Intent.ACTION_PACKAGE_REMOVED

Intent.ACTION_PACKAGE_CHANGED

Intent.ACTION_PACKAGE_RESTARTED

Intent.ACTION_PACKAGE_DATA_CLEARED

首先定义一个Broadcast类——HandlePackageAction，代码如下：

public class HandlePackageAction extends BroadcastReceiver {

    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (Intent.ACTION_PACKAGE_ADDED.equals(action))
        {
            Toast.makeText(context, "有应用被添加", Toast.LENGTH_LONG).show();
        }
        else if (Intent.ACTION_PACKAGE_REMOVED.equals(action))
        {
            Toast.makeText(context, "有应用被删除", Toast.LENGTH_LONG).show();
        }
        else if (Intent.ACTION_PACKAGE_CHANGED.equals(action))
        {
            Toast.makeText(context, "有应用被改变", Toast.LENGTH_LONG).show();
        }
        else if (Intent.ACTION_PACKAGE_REPLACED.equals(action))
        {
            Toast.makeText(context, "有应用被替换", Toast.LENGTH_LONG).show();
        }
        else if (Intent.ACTION_PACKAGE_RESTARTED.equals(action))
        {
            Toast.makeText(context, "有应用被重启", Toast.LENGTH_LONG).show();
        }
        else if (Intent.ACTION_PACKAGE_INSTALL.equals(action))
        {
            Toast.makeText(context, "有应用被安装", Toast.LENGTH_LONG).show();
        }
    }

}

然后在AndroidManifest.xml中注册HandlePackageAction，内容如下：

 

<receiver android:name=".HandlePackageAction"
    android:enabled="true">
    <intent-filter>
        <action android:name="android.intent.action.PACKAGE_ADDED"></action>
        <action android:name="android.intent.action.PACKAGE_CHANGED"></action>
        <action android:name="android.intent.action.PACKAGE_REMOVED"></action>
        <action android:name="android.intent.action.PACKAGE_REPLACED"></action>
        <action android:name="android.intent.action.PACKAGE_RESTARTED"></action>
        <action android:name="android.intent.action.PACKAGE_INSTALL"></action>
        <data android:scheme="package"></data>
    </intent-filter>
</receiver>

 2）安装、卸载应用程序

Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(new File("/sdcard/Test.apk")),
        "application/vnd.android.package-archive");
startActivity(intent); // 安装 程序

Uri packageURI = Uri.parse("package:com.ygc.Test");
Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI);
startActivity(uninstallIntent);// 正常卸载程序

 

 3）开机启动Activity

首先定义一个Broadcast类——HandleBootComplete，代码如下：

public class HandleBootComplete extends BroadcastReceiver {
    public void onReceive(Context context, Intent intent) {
        Intent startActivityIntent = new Intent(context, DrawText.class);
        startActivityIntent.setAction(Intent.ACTION_MAIN);
        startActivityIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        startActivityIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(startActivityIntent);
    }
}

然后在AndroidManifest.xml中注册HandleBootComplete，内容如下：

 

<!-- 添加权限 -->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />


    <receiver android:name="HandleBootComplete" android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
            <category android:name="android.intent.category.HOME" />
        </intent-filter>