android 中使用自定义权限在广播中的利用 _android

博观而约取，厚积而薄发。这篇文章主要讲述android 中使用自定义权限在广播中的利用相关的知识，希望能为你提供帮助。
1、在一个进程中发送一个有自定义权限的广播，另外一个进程中拥有广播接受者接受到该广播

< ?xml version="1.0" encoding="utf-8"?> < manifest xmlns:android="http://schemas.android.com/apk/res/android" package="im.weiyuan.com.hkkj"> < application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> < activity android:name=".MainActivity"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < /activity> < receiverandroid:name=".MyReceiver" android:enabled="true" android:exported="true"> < intent-filter> < action android:name="com.weiyuan.test"> < /action> < /intent-filter> < /receiver> < /application> < /manifest>

package im.weiyuan.com.hkkj; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.widget.Toast; public class MyReceiver extends BroadcastReceiver { public MyReceiver() { }@Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving Toast.makeText(context,"收到了广播",Toast.LENGTH_LONG).show(); } }

在另外一个进程中只需要使用下面的代码，就可以发送一个广播

package im.weiyuan.com.viewutils; import android.content.Intent; import android.os.PersistableBundle; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity {privateButton btn_main; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if(savedInstanceState != null){ Toast.makeText(MainActivity.this,savedInstanceState.getString("data"),Toast.LENGTH_LONG).show(); } btn_main = (Button) findViewById(R.id.btn_main); btn_main.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(); intent.setAction("com.weiyuan.test"); sendBroadcast(intent); } }); }@Override protected void onStop() { super.onStop(); Log.d("123456","onStop is called"); }@Override protected void onPause() { super.onPause(); Log.d("123456","onPause is called"); }@Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); Log.d("123456","onSaveInstanceState is called"); outState.putString("data","1020223"); }}

【android 中使用自定义权限在广播中的利用】现在我们在发送广播的时候带上一个自定义权限：

package im.weiyuan.com.viewutils; import android.content.Intent; import android.os.PersistableBundle; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity {privateButton btn_main; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if(savedInstanceState != null){ Toast.makeText(MainActivity.this,savedInstanceState.getString("data"),Toast.LENGTH_LONG).show(); } btn_main = (Button) findViewById(R.id.btn_main); btn_main.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(); intent.setAction("com.weiyuan.test"); String pression = "com.weiyuan.presstion"; sendBroadcast(intent,pression); } }); }@Override protected void onStop() { super.onStop(); Log.d("123456","onStop is called"); }@Override protected void onPause() { super.onPause(); Log.d("123456","onPause is called"); }@Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); Log.d("123456","onSaveInstanceState is called"); outState.putString("data","1020223"); }}

我们在发送广播的时候带上了一个权限：

String pression = "com.weiyuan.presstion";

在另外一个进程的广播接受者需要对该权限在清单文件中进行声明和注册
否则广播接受者无法接受到发送带有权限的广播

< ?xml version="1.0" encoding="utf-8"?> < manifest xmlns:android="http://schemas.android.com/apk/res/android" package="im.weiyuan.com.hkkj"> < permission android:name="com.weiyuan.presstion"> < /permission> < uses-permission android:name="com.weiyuan.presstion"> < /uses-permission> < application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> < activity android:name=".MainActivity"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < /activity> < receiverandroid:name=".MyReceiver" android:enabled="true" android:exported="true"> < intent-filter> < action android:name="com.weiyuan.test"> < /action> < /intent-filter> < /receiver> < /application> < /manifest>