sendStickyBroadcast和sendStickyOrderedBroadcast

时间：2016-01-21 23:54:51 阅读：252 评论：0 收藏：0 [点我收藏+]

sendStickyBroadcast和sendStickyOrderedBroadcast

2013年10月02日 ⁄ 綜合 ⁄ 共 3547字 ⁄ 字型大小小中大 ⁄ 評論關閉

sendStickyBroadcast和sendStickyOrderedBroadcast發出的廣播會一直滯留（等待），以便有人註冊這則廣播消息後能儘快的收到這條廣播。其他功能與sendBroadcast相同。但是使用sendStickyBroadcast 發送廣播需要獲得BROADCAST_STICKY permission，如果沒有這個permission則會拋出異常。

例子：

[java] view plain copy print ?

package com.android.test;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class StickyBroadcastTest extends Activity {
private Button mSendBroadcast;
private Button mSendStickyBroadcast;
private Button mNextActivity;
private Context mContext;
private int mStickyBrcCount;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mContext = getApplicationContext();
mSendBroadcast = (Button)findViewById(R.id.broadcast);
mSendStickyBroadcast = (Button)findViewById(R.id.stickybroadcast);
mNextActivity = (Button)findViewById(R.id.next_activity);
mSendBroadcast.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent("com.android.action.broadcast");
mContext.sendBroadcast(intent);
}
});
mSendStickyBroadcast.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mStickyBrcCount++;
Intent intent = new Intent("com.android.action.sticky.broadcast");
intent.putExtra("sent_count", mStickyBrcCount);
mContext.sendStickyBroadcast(intent);
}
});
mNextActivity.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(StickyBroadcastTest.this, MyReceiverActivity.class);
startActivity(intent);
}
});
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
mStickyBrcCount = 0;
}
}
//MyReceiverActivity
package com.android.test;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
public class MyReceiverActivity extends Activity {
private IntentFilter mIntentFilter;
private final static String TAG = "MyReceiverActivity";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.broadcast_receiver);
mIntentFilter = new IntentFilter();
mIntentFilter.addAction("com.android.action.broadcast");
mIntentFilter.addAction("com.android.action.sticky.broadcast");
}
private BroadcastReceiver mReceiver = new BroadcastReceiver () {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
int count = intent.getIntExtra("sent_count", -1);
Log.d(TAG, "action = " + action + "and count = " + count);
//context.removeStickyBroadcast(intent);
}
};
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
unregisterReceiver(mReceiver);

sendStickyBroadcast和sendStickyOrderedBroadcast

原文：http://www.cnblogs.com/sansansan/p/5149588.html

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