AndroidAutoSize
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Published
20 hours ago •
JessYanCoding
JessYanCoding
启动页Manifest中配置的theme，无法适配
Environment
- [x] Autosize Version: 1.2.1
- [x] Target Android Version: 23
- [x] Device Model: All
- [x] Device Resolution: All
- [x] Design Size On AndroidManifest: 基于宽度 375dp
问题描述
启动页在AndroidManifest中设置了自定义的theme，大致就是logo+slogan这样的背景，用来优化启动的用户体验的，现在发现背景中的图片都不会自动适配。
原因分析
startActivity时在Activity的第一帧渲染之前，系统会自动添加一个startingWindow，这个window创建时会应用配置的theme，但是应用启动时使用的相关context关联的DisplayMetric没有进行适配，导致这个现象。
解决方案
目前没有想到很好的解决方案 - -！特来求助
Related Code:
// PhoneWindowManager.java
public StartingSurface addSplashScreen(IBinder appToken, String packageName, int theme,
CompatibilityInfo compatInfo, CharSequence nonLocalizedLabel, int labelRes, int icon,
int logo, int windowFlags, Configuration overrideConfig, int displayId) {
// 省略。。。
Context context = mContext;
if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen " + packageName
+ ": nonLocalizedLabel=" + nonLocalizedLabel + " theme="
+ Integer.toHexString(theme));
// Obtain proper context to launch on the right display.
final Context displayContext = getDisplayContext(context, displayId);
if (displayContext == null) {
// Can't show splash screen on requested display, so skip showing at all.
return null;
}
context = displayContext;
if (theme != context.getThemeResId() || labelRes != 0) {
try {
context = context.createPackageContext(packageName, CONTEXT_RESTRICTED);
context.setTheme(theme);
} catch (PackageManager.NameNotFoundException e) {
// Ignore
}
}
if (overrideConfig != null && !overrideConfig.equals(EMPTY)) {
if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen: creating context based"
+ " on overrideConfig" + overrideConfig + " for splash screen");
final Context overrideContext = context.createConfigurationContext(overrideConfig);
overrideContext.setTheme(theme);
final TypedArray typedArray = overrideContext.obtainStyledAttributes(
com.android.internal.R.styleable.Window);
final int resId = typedArray.getResourceId(R.styleable.Window_windowBackground, 0);
if (resId != 0 && overrideContext.getDrawable(resId) != null) {
// We want to use the windowBackground for the override context if it is
// available, otherwise we use the default one to make sure a themed starting
// window is displayed for the app.
if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "addSplashScreen: apply overrideConfig"
+ overrideConfig + " to starting window resId=" + resId);
context = overrideContext;
}
typedArray.recycle();
}
final PhoneWindow win = new PhoneWindow(context);
win.setIsStartingWindow(true);
CharSequence label = context.getResources().getText(labelRes, null);
// Only change the accessibility title if the label is localized
if (label != null) {
win.setTitle(label, true);
} else {
win.setTitle(nonLocalizedLabel, false);
}
win.setType(
WindowManager.LayoutParams.TYPE_APPLICATION_STARTING);
synchronized (mWindowManagerFuncs.getWindowManagerLock()) {
// Assumes it's safe to show starting windows of launched apps while
// the keyguard is being hidden. This is okay because starting windows never show
// secret information.
if (mKeyguardOccluded) {
windowFlags |= FLAG_SHOW_WHEN_LOCKED;
}
}
// Force the window flags: this is a fake window, so it is not really
// touchable or focusable by the user. We also add in the ALT_FOCUSABLE_IM
// flag because we do know that the next window will take input
// focus, so we want to get the IME window up on top of us right away.
win.setFlags(
windowFlags|
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
windowFlags|
WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE|
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
win.setDefaultIcon(icon);
win.setDefaultLogo(logo);
win.setLayout(WindowManager.LayoutParams.MATCH_PARENT,
WindowManager.LayoutParams.MATCH_PARENT);
final WindowManager.LayoutParams params = win.getAttributes();
params.token = appToken;
params.packageName = packageName;
params.windowAnimations = win.getWindowStyle().getResourceId(
com.android.internal.R.styleable.Window_windowAnimationStyle, 0);
params.privateFlags |=
WindowManager.LayoutParams.PRIVATE_FLAG_FAKE_HARDWARE_ACCELERATED;
params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;
if (!compatInfo.supportsScreen()) {
params.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_COMPATIBLE_WINDOW;
}
params.setTitle("Splash Screen " + packageName);
addSplashscreenContent(win, context);
wm = (WindowManager) context.getSystemService(WINDOW_SERVICE);
view = win.getDecorView();
if (DEBUG_SPLASH_SCREEN) Slog.d(TAG, "Adding splash screen window for "
+ packageName + " / " + appToken + ": " + (view.getParent() != null ? view : null));
wm.addView(view, params);
// 省略。。。
}
//AndroidManifest
<activity android:name=".MainActivity" android:theme="@style/AppTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
// MainTheme
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@android:color/white"/>
<item
android:top="100dp">
<bitmap
android:gravity="top|center_horizontal"
android:src="@drawable/logo"/>
</item>
<item
android:bottom="50dp">
<bitmap
android:gravity="bottom|center_horizontal"
android:src="@drawable/slogan"/>
</item>
</layer-list>
Others:
框架只会在 Activity onCreate 设置 density， 启动图加载的时间明显早于 Activity onCreate，所以要想适配启动图就要在它加载之前设置 density，现在能想到的方法就是下面的方法，如果不行那就没办法了。
https://github.com/JessYanCoding/AndroidAutoSize/issues/1#issuecomment-504654664
根据上面的的回答，创建一个重写 getResources 方法的 ContextWrapper，
@Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(ContextWrapper);
}
然后将这个 ContextWrapper 传给 Application 的 super.attachBaseContext();
