AndroidWidget实践 --- EverydayTips开发(3)

这次我们实现点击widget 弹出Activity 并把当前字串传送给Activity

其实很简单就是intent的传值

但是由于是第一次做,还是遇到了很多小问题,查了不少资料总算搞定

package com.su.tipeveryday;import android.app.PendingIntent;import android.appwidget.AppWidgetManager;import android.appwidget.AppWidgetProvider;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.provider.ContactsContract.CommonDataKinds.Note;import android.util.Log;import android.widget.RemoteViews;import android.widget.TextView;import android.widget.Toast;public class TipEveryDayWidget extends AppWidgetProvider {@Overridepublic void onDeleted(Context context, int[] appWidgetIds) {// TODO Auto-generated method stubsuper.onDeleted(context, appWidgetIds);}@Overridepublic void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {// widget更新执行的方法// TODO Auto-generated method stubsuper.onUpdate(context, appWidgetManager, appWidgetIds);// final int N = appWidgetIds.length;//实现单个widget更新的方法,暂时不用// Log.d("app", "onUpdate--->Ids===" + String.valueOf(N));// for (int i = 0; i < N; i++) {// 如果有很多同类widget是需要遍历的(他们的id是不同的)// int appWidgetId = appWidgetIds[i];// updateAppWidget(context, appWidgetManager, appWidgetId);//// 更新widget的方法// }updateAppWidget(context, appWidgetManager, appWidgetIds);// 更新widget的方法}private void updateAppWidget(Context context,AppWidgetManager appWidgetManager, int[] appWidgetIds) {// 1.1,增加跳转用activity相关 intentRemoteViews views = new RemoteViews(context.getPackageName(),R.layout.widget_layout);String tip = Tips.getTips();// 从Tips.java 获取警句views.setTextViewText(R.id.textViewWidget, tip);// 设置Intent intent = new Intent(context, TipEveryDayActivity.class);// 一下三句就可以启动Activity了intent.putExtra("TIP", tip);PendingIntent pendingIntent = PendingIntent.getActivity(context, 0,intent, PendingIntent.FLAG_CANCEL_CURRENT);/** * 传值说明 * ①若该Intent带有数据，则需要将最后一个参数的值设为：FLAG_CANCEL_CURRENT eg: * PendingIntent Pfullintent=PendingIntent.getActivity(this, 0, * fullIntent,PendingIntent.FLAG_CANCEL_CURRENT); * ②若该Intent不带数据，则最后一个参数设为0 eg: PendingIntent * Pfullintent=PendingIntent.getActivity(this, 0, fullIntent, 0); */views.setOnClickPendingIntent(R.id.textViewWidget, pendingIntent);Intent intent2 = new Intent("com.su.ontipclick");// 这三句就可以注册按钮事件了,确实比较麻烦PendingIntent pendingIntent2 = PendingIntent.getBroadcast(context, 0,intent2, 0);views.setOnClickPendingIntent(R.id.buttonChange, pendingIntent2);appWidgetManager.updateAppWidget(appWidgetIds, views);// 把widget的内容更新}public void onReceive(Context context, Intent intent) {if (intent.getAction().equals("com.su.ontipclick")) {Toast.makeText(context, "OK!!!!!", Toast.LENGTH_LONG).show();// 点击按钮会触发的事件RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_layout);// 只能通过远程对象来设置appwidget中的控件状态String tip = Tips.getTips();// 从Tips.java 获取警句remoteViews.setTextViewText(R.id.textViewWidget, tip);AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);// 获得appwidget管理实例，用于管理appwidget以便进行更新操作ComponentName componentName = new ComponentName(context,TipEveryDayWidget.class);// 相当于获得所有本程序创建的appwidgetappWidgetManager.updateAppWidget(componentName, remoteViews);}super.onReceive(context, intent);}}

具体自己看注释吧

下面是Activity获取值 这个没什么说的

package com.su.tipeveryday;    import android.app.Activity;  import android.appwidget.AppWidgetManager;  import android.content.Intent;  import android.os.Bundle;  import android.util.Log;  import android.widget.EditText;  public class TipEveryDayActivity extends Activity {            int mAppWidgetId;private EditText editText;            @Override      protected void onCreate(Bundle savedInstanceState) {          // TODO Auto-generated method stub          super.onCreate(savedInstanceState);          setContentView(R.layout.main);          Log.i("myLog"," on WidgetConf ... ");          editText = (EditText)findViewById(R.id.editTextTip);         setResult(RESULT_CANCELED);                    // Find the widget id from the intent.          Intent intent = getIntent();                  String tip = intent.getStringExtra("TIP");//获取传来的值editText.setText(tip);       Bundle extras = intent.getExtras();          if (extras != null) {              mAppWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID,                      AppWidgetManager.INVALID_APPWIDGET_ID);              Log.i("TTTTT", mAppWidgetId+"");//这个返回的屏幕上的widgetID,没增加一个会加一 我的模拟器是19,应该是有保留ID?                              }          Intent resultValue = new Intent();          resultValue.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,                  mAppWidgetId);  //感觉这里的mAppWidgetId 应该是和控制知道widget有关稍后研究                  setResult(RESULT_OK, resultValue);            }  }  

上代码http://dl.dbank.com/s0bnzfb4vk