[移动开发]android 获取当前应用的oom_adj

public static final int AID_APP = 10000;
	public static final int AID_USER = 100000;
	private String getOomAdj() {
		File[] files = new File("/proc").listFiles();
		int lowestOomScore = Integer.MAX_VALUE;
		String foregroundProcess = null;
		int pid = android.os.Process.myPid();
		Log.v(TAG, "getOomAdj -------- pid =  "  + pid);
		try {
			int userId = 0;
			// loop until we get the correct user id.
			// 100000 is the offset for each user.


			// u{user_id}_a{app_id} is used on API 17+ for multiple user
			// account support.
			// String uidName = String.format("u%d_a%d", userId, appId);
			File oomScoreAdj = new File(String.format(
					"/proc/%d/oom_score_adj", pid));
			if (oomScoreAdj.canRead()) {
				int oomAdj = Integer.parseInt(read(oomScoreAdj
						.getAbsolutePath()));
				Log.v(TAG, "getOomAdj ----------oomAdj = " + oomAdj);
			}
			int oomscore = Integer.parseInt(read(String.format(
					"/proc/%d/oom_score", pid)));
			Log.v(TAG, "getOomAdj ----------oomscore = " + oomscore);
			if (oomscore < lowestOomScore) {
				lowestOomScore = oomscore;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return foregroundProcess;
	}

	private static String read(String path) throws IOException {
		StringBuilder output = new StringBuilder();
		BufferedReader reader = new BufferedReader(new FileReader(path));
		output.append(reader.readLine());

		for (String line = reader.readLine(); line != null; line = reader
				.readLine()) {
			output.append('\n').append(line);
		}
		reader.close();
		return output.toString().trim();
	}