使FrameLayout的Gravity即是Center - 生成hprof 资料方法

当前位置: 编程技术>移动开发

本页文章导读:

▪使FrameLayout的Gravity即是Center 使FrameLayout的Gravity等于Center 由于无法设置FrameLayout的Gravity，所以只能通过重写onLayout事件实现居中的效果了 @Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { super..........

▪ 生成hprof 资料方法生成hprof 文件方法 String packageName = getApplicationInfo().packageName; String hpFilePath = "/data/data/" + packageName + "/input.hprof"; try { // Debug.dumpHprofData("/sdcard/input.hprof"); Debug.dumpHprofData(hpFilePath); } ca.........

▪ 查看程序现阶段内存信息查看程序当前内存信息 private void displayBriefMemory() { final ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE); ActivityManager.MemoryInfo info = new ActivityManager.MemoryInfo(); activityManage.........

[1]使FrameLayout的Gravity即是Center

来源: 互联网发布时间: 2014-02-18

使FrameLayout的Gravity等于Center
由于无法设置FrameLayout的Gravity，所以只能通过重写onLayout事件实现居中的效果了

@Override
protected void onLayout(boolean changed, int left, int top, int right,
		int bottom) {

	super.onLayout(changed, left, top, right, bottom);

	// align child to center
	int width = right - left;
	int height = bottom - top;

	final int childCount = getChildCount();
	for (int i = 0; i < childCount; i++) {
		final View childView = getChildAt(i);

		if (childView.getVisibility() != View.GONE) {
			final int childLeft = (width - childView.getWidth()) / 2;
			final int childTop = (height - childView.getHeight()) / 2;

			childView.layout(childLeft, childTop,
					childLeft + childView.getWidth(),
					childTop + childView.getHeight());
		}
	}
}

[2] 生成hprof 资料方法

来源: 互联网发布时间: 2014-02-18

生成hprof 文件方法

String packageName = getApplicationInfo().packageName;
String hpFilePath = "/data/data/" + packageName + "/input.hprof";
try {
// Debug.dumpHprofData("/sdcard/input.hprof");
Debug.dumpHprofData(hpFilePath);
} catch (IOException e) {
e.printStackTrace();
}

[3] 查看程序现阶段内存信息

来源: 互联网发布时间: 2014-02-18

查看程序当前内存信息
private void displayBriefMemory() {
final ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
ActivityManager.MemoryInfo info = new ActivityManager.MemoryInfo();
activityManager.getMemoryInfo(info);
String tag = "====";
Log.i(tag, "系统剩余内存:" + (info.availMem >> 10) + "k");
Log.i(tag, "系统是否处于低内存运行：" + info.lowMemory);
Log.i(tag, "当系统剩余内存低于" + info.threshold + "时就看成低内存运行");
}