Android:Intent';缺少s extra(使用小部件)
我想制作一个有两个按钮的小部件(一个是带有数字的文本视图)。一个按钮应增加数字,另一个按钮应减少数字 这是我的变量(2个动作名称和一个整数表示数字) onUpdate()命令: 最后是我的onReturn(),我想在其中将计数器设置为我给Intent的值并执行操作:Android:Intent';缺少s extra(使用小部件),android,android-intent,widget,android-pendingintent,Android,Android Intent,Widget,Android Pendingintent,我想制作一个有两个按钮的小部件(一个是带有数字的文本视图)。一个按钮应增加数字,另一个按钮应减少数字 这是我的变量(2个动作名称和一个整数表示数字) onUpdate()命令: 最后是我的onReturn(),我想在其中将计数器设置为我给Intent的值并执行操作: @Override public void onReceive(Context context, Intent intent) { super.onReceive(context, intent); counter = in
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
counter = intent.getIntExtra("safeInt", 0);
if (PLUS_ONE.equals(intent.getAction())) {
counter++;
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}
if (MINUS_ONE.equals(intent.getAction())) {
counter--;
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}}
打电话
counter = intent.getIntExtra("safeInt", 0);
计数器始终设置为0,这意味着没有额外的值。
我就是不明白为什么!有什么解决办法吗?:) 我找到了另一个解决方案。
我只是使用了SharedReferences,而不是Intent,它起了作用!:)
代码如下:
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.content.SharedPreferences;
import android.widget.RemoteViews;
public class Plus1CounterAppWidgetProvider extends AppWidgetProvider{
private static final String PLUS_ONE = "Plus1";
private static final String MINUS_ONE = "Minus1";
private static final String REFRESH_COUNTER = "Refresh";
static int counter = 0;
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setOnClickPendingIntent(R.id.counter_widget, getPendingSelfIntent(context, PLUS_ONE));
remoteViews.setOnClickPendingIntent(R.id.img_downWid, getPendingSelfIntent(context, MINUS_ONE));
remoteViews.setOnClickPendingIntent(R.id.img_refreshWid, getPendingSelfIntent(context, REFRESH_COUNTER));
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
SharedPreferences sharedPref = context.getSharedPreferences("com.plus1counter.safeFile", Context.MODE_PRIVATE);
counter = sharedPref.getInt("safeFile", 0);
if(counter == 100){
counter = 0;
}
if (PLUS_ONE.equals(intent.getAction())) {
counter++;
writeSharedPrefs(sharedPref);
}
if (MINUS_ONE.equals(intent.getAction())) {
counter--;
writeSharedPrefs(sharedPref);
}
if(REFRESH_COUNTER.equals(intent.getAction())){
counter = 0;
writeSharedPrefs(sharedPref);
}
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}
public void writeSharedPrefs(SharedPreferences sharedPref){
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt("safeFile", counter);
editor.commit();
}
protected PendingIntent getPendingSelfIntent(Context context, String action) {
Intent intent = new Intent(context, Plus1CounterAppWidgetProvider.class);
intent.setAction(action);
return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
}
导入android.app.pendingent;
导入android.appwidget.AppWidgetManager;
导入android.appwidget.AppWidgetProvider;
导入android.content.ComponentName;
导入android.content.Context;
导入android.content.Intent;
导入android.content.SharedReferences;
导入android.widget.remoteview;
公共类Plus1CounterAppWidgetProvider扩展了AppWidgetProvider{
私有静态最终字符串加上_ONE=“Plus1”;
私有静态最终字符串减去_ONE=“Minus1”;
私有静态最终字符串刷新\u COUNTER=“刷新”;
静态整数计数器=0;
@凌驾
公共void onUpdate(上下文上下文,AppWidgetManager AppWidgetManager,int[]AppWidgetId){
final int N=appWidgetIds.length;
对于(int i=0;i此处为最终应用程序
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
counter = intent.getIntExtra("safeInt", 0);
if (PLUS_ONE.equals(intent.getAction())) {
counter++;
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}
if (MINUS_ONE.equals(intent.getAction())) {
counter--;
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}}
counter = intent.getIntExtra("safeInt", 0);
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.content.SharedPreferences;
import android.widget.RemoteViews;
public class Plus1CounterAppWidgetProvider extends AppWidgetProvider{
private static final String PLUS_ONE = "Plus1";
private static final String MINUS_ONE = "Minus1";
private static final String REFRESH_COUNTER = "Refresh";
static int counter = 0;
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setOnClickPendingIntent(R.id.counter_widget, getPendingSelfIntent(context, PLUS_ONE));
remoteViews.setOnClickPendingIntent(R.id.img_downWid, getPendingSelfIntent(context, MINUS_ONE));
remoteViews.setOnClickPendingIntent(R.id.img_refreshWid, getPendingSelfIntent(context, REFRESH_COUNTER));
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);
}
}
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
SharedPreferences sharedPref = context.getSharedPreferences("com.plus1counter.safeFile", Context.MODE_PRIVATE);
counter = sharedPref.getInt("safeFile", 0);
if(counter == 100){
counter = 0;
}
if (PLUS_ONE.equals(intent.getAction())) {
counter++;
writeSharedPrefs(sharedPref);
}
if (MINUS_ONE.equals(intent.getAction())) {
counter--;
writeSharedPrefs(sharedPref);
}
if(REFRESH_COUNTER.equals(intent.getAction())){
counter = 0;
writeSharedPrefs(sharedPref);
}
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.plus1counter_widget);
remoteViews.setTextViewText(R.id.counter_widget, Integer.toString(counter));
AppWidgetManager.getInstance(context).updateAppWidget(new ComponentName(context, Plus1CounterAppWidgetProvider.class), remoteViews);
}
public void writeSharedPrefs(SharedPreferences sharedPref){
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt("safeFile", counter);
editor.commit();
}
protected PendingIntent getPendingSelfIntent(Context context, String action) {
Intent intent = new Intent(context, Plus1CounterAppWidgetProvider.class);
intent.setAction(action);
return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
}