我有一个App小部件，在更新时会获取与小部件相匹配的尺寸的图像，并将该图像放入ImageView（通过RemoteViews）。 它可以正常工作。
但是对于支持旋转主屏幕的设备（我说的不是基于设备方向旋转的例如Activity，而是主屏幕本身的旋转），当从横向切换到纵向或者反过来时，小部件的尺寸和宽高比会略微改变......也就是尺寸不能保持固定。
因此，我的小部件需要能够检测到主屏幕旋转，并获取新的图像（或至少加载不同的预获取图像）。
我无法弄清楚这是否可能以及如何实现。 有什么提示吗？
使用以下代码检测方向：
View view = getWindow().getDecorView();
int orientation = getResources().getConfiguration().orientation;
if (Configuration.ORIENTATION_LANDSCAPE == orientation) {
relativeLayout.setBackgroundDrawable(getResources().getDrawable(R.drawable.log_landscape));
imageview_Logo.setImageResource(R.drawable.log_landscape_2);
Log.d("Landscape", String.valueOf(orientation));
//Do SomeThing; // Landscape
} else {
relativeLayout.setBackgroundDrawable( getResources().getDrawable(R.drawable.login_bg) );
imageview_Logo.setImageResource(R.drawable.logo_login);
//Do SomeThing; // Portrait
Log.d("Portrait", String.valueOf(orientation));
}
public class YourWidgetProvider extends AppWidgetProvider {
@Override
public void onEnabled(Context context) {
super.onEnabled(context);
context.registerReceiver(mOrientationChangeReceiver,new IntentFilter(Intent.ACTION_CONFIGURATION_CHANGED));
}
@Override
public void onDisabled(Context context) {
context.unregisterReceiver(mOrientationChangeReceiver);
super.onDisabled(context);
}
public BroadcastReceiver mOrientationChangeReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent myIntent) {
if ( myIntent.getAction().equals(Intent.ACTION_CONFIGURATION_CHANGED)) {
if(context.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE){
// landscape orientation
//write logic for building remote view here
// buildRemoteViews();
}
else {
//portrait orientation
//write logic for building remote view here
// buildRemoteViews();
}
}
}
};
}
@Override
public void onAppWidgetOptionsChanged(Context context, AppWidgetManager appWidgetManager, int appWidgetId, Bundle newOptions)
{
int width = newOptions.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH);
int height = newOptions.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);
int orientation = context.getResources().getConfiguration().orientation;
if (BuildConfig.DEBUG) logWidgetEvents("UPDATE " + width + "x" + height + " - " + orientation, new int[] { appWidgetId }, appWidgetManager);
onUpdate(context, appWidgetManager, new int[] { appWidgetId });
}
int rotation = context.getResources().getConfiguration().orientation;
if (rotation == Configuration.ORIENTATION_PORTRAIT)
{
... portrait ...
}
else
{
... landscape ...
}
View view = getWindow().getDecorView();
int orientation = getResources().getConfiguration().orientation;
if (Configuration.ORIENTATION_LANDSCAPE == orientation) {
relativeLayout.setBackgroundDrawable(getResources().getDrawable(R.drawable.log_landscape));
imageview_Logo.setImageResource(R.drawable.log_landscape_2);
Log.d("Landscape", String.valueOf(orientation));
//Do SomeThing; // Landscape
} else {
relativeLayout.setBackgroundDrawable( getResources().getDrawable(R.drawable.login_bg) );
imageview_Logo.setImageResource(R.drawable.logo_login);
//Do SomeThing; // Portrait
Log.d("Portrait", String.valueOf(orientation));
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Checks the orientation of the screen
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}
好的，对于小部件，我们需要将我们的应用程序类添加如下，并不要忘记在清单中声明它，该方法基本上向您的小部件的所有实例发送更新广播。
public class MyApplication extends Application {
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// create intent to update all instances of the widget
Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE, null, this, MyWidget.class);
// retrieve all appWidgetIds for the widget & put it into the Intent
AppWidgetManager appWidgetMgr = AppWidgetManager.getInstance(this);
ComponentName cm = new ComponentName(this, MyWidget.class);
int[] appWidgetIds = appWidgetMgr.getAppWidgetIds(cm);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds);
// update the widget
sendBroadcast(intent);
}
}
并且在清单文件中...
<application
android:name="yourpackagename.MyApplication"
android:description="@string/app_name"
android:label="@string/app_name"
android:icon="@drawable/app_icon">
<!-- here go your Activity definitions -->
检查一下这段代码，它是有效的：
myButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
int rotation = getWindowManager().getDefaultDisplay()
.getRotation();
// DisplayMetrics dm = new DisplayMetrics();
// getWindowManager().getDefaultDisplay().getMetrics(dm);
int orientation;
CharSequence text;
switch (rotation) {
case Surface.ROTATION_0:
text = "SCREEN_ORIENTATION_PORTRAIT";
break;
case Surface.ROTATION_90:
text = "SCREEN_ORIENTATION_LANDSCAPE";
break;
case Surface.ROTATION_180:
text = "SCREEN_ORIENTATION_REVERSE_PORTRAIT";
break;
case Surface.ROTATION_270:
text = "SCREEN_ORIENTATION_REVERSE_LANDSCAPE";
break;
default:
text = "SCREEN_ORIENTATION_PORTRAIT";
break;
}
// CharSequence text = String.valueOf(orientation);
Toast toast = Toast.makeText(getApplicationContext(), text,
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER | Gravity.CENTER, 10, 0);
toast.show();
}
});
WindowManager wm;
Display ds;
public boolean portrait;
public void checkOrientation() {
wm = getWindowManager();
ds=wm.getDefaultDisplay();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
checkOrientation();
if (ds.getWidth() > ds.getHeight()) {
// ---landscape mode---
portrait = false;
} else if (ds.getWidth() < ds.getHeight()) {
// ---portrait mode---
portrait = true;
}
}