本文深入探讨了Android4.0.3源码中关于Home应用如何设置默认壁纸的实现过程，包括如何获取、清除及应用壁纸的详细步骤。
private void setDefaultWallpaper() {
if (!mWallpaperChecked) {
Drawable wallpaper = peekWallpaper();
if (wallpaper == null) {
try {
clearWallpaper();
} catch (IOException e) {
Log.e(LOG_TAG, "Failed to clear wallpaper " + e);
}
} else {
getWindow().setBackgroundDrawable(new ClippedDrawable(wallpaper));
}
mWallpaperChecked = true;
}
if (!mWallpaperChecked) {
Drawable wallpaper = peekWallpaper();
if (wallpaper == null) {
try {
clearWallpaper();
} catch (IOException e) {
Log.e(LOG_TAG, "Failed to clear wallpaper " + e);
}
} else {
getWindow().setBackgroundDrawable(new ClippedDrawable(wallpaper));
}
mWallpaperChecked = true;
}
}
参考Android4.0.3源码sample中Home app
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