Java ActivityManager.getLargeMemoryClass方法代码示例

import android.app.ActivityManager; //导入方法依赖的package包/类
public void handleMessage(Message msg) {
    switch (msg.what) {
        case MSG_FINISH_LAUNCHERACTIVITY:
            //跳转到MainActivity，并结束当前的LauncherActivity
            Intent intent = new Intent(LaunchActivity.this, HomeActivity.class);
            startActivity(intent);
            ActivityManager activityManager =(ActivityManager)getApplication().getSystemService(Context.ACTIVITY_SERVICE);
            int x1=activityManager.getMemoryClass();
            int x2=activityManager.getLargeMemoryClass();
            Log.d("限制内存大小",String.valueOf(x1));
            Log.d("限制最大内存大小",String.valueOf(x2));
            LaunchActivity.this.finish();
            break;

        default:
            break;
    }
}
 

import android.app.ActivityManager; //导入方法依赖的package包/类
static int calculateMemoryCacheSize(Context context) {
  ActivityManager am = getService(context, ACTIVITY_SERVICE);
  boolean largeHeap = (context.getApplicationInfo().flags & FLAG_LARGE_HEAP) != 0;
  int memoryClass = largeHeap ? am.getLargeMemoryClass() : am.getMemoryClass();
  // Target ~15% of the available heap.
  return (int) (1024L * 1024L * memoryClass / 7);
}
 

import android.app.ActivityManager; //导入方法依赖的package包/类
public static void logMemoryInfo(Activity aty) {
    ActivityManager activityManager = (ActivityManager) aty.getSystemService(Context.ACTIVITY_SERVICE);
    int memClass = activityManager.getMemoryClass(); // m unit
    int largeMemoryClass = activityManager.getLargeMemoryClass(); // m unit
    float totalMemory = Runtime.getRuntime().totalMemory() * 1.0f / (1024 * 1024);
    float freeMemory = Runtime.getRuntime().freeMemory() * 1.0f / (1024 * 1024);
    float maxMemory = Runtime.getRuntime().maxMemory() * 1.0f / (1024 * 1024);

    LogUtil.i("device memClass:" + memClass + "m");
    LogUtil.i("device largeMemoryClass:" + largeMemoryClass + "m");
    LogUtil.i("app totalMemory:" + totalMemory + "m");
    LogUtil.i("app freeMemory:" + freeMemory + "m");
    LogUtil.i("app maxMemory:" + maxMemory + "m");
}
 

import android.app.ActivityManager; //导入方法依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private static int getLargeMemoryClass(ActivityManager am) {
	return am.getLargeMemoryClass();
}
 

import android.app.ActivityManager; //导入方法依赖的package包/类
@SuppressLint("NewApi")
    private void init() {
//        setWillNotCacheDrawing(true);
//        setDrawingCacheEnabled(false);
        
        mEmpty = true;

        // setup brush bitmaps
        final ActivityManager am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            mMemClass = am.getLargeMemoryClass();
        } else {
            mMemClass = am.getMemoryClass();
        }
        mLowMem = (mMemClass <= 16);
        if (true||DEBUG) {
            Log.v(TAG, "Slate.init: memClass=" + mMemClass + (mLowMem ? " (LOW)" : ""));
        }

        final Resources res = getContext().getResources();

//        mCircleBits = BitmapFactory.decodeResource(res, R.drawable.circle_1bpp);
//        if (mCircleBits == null) { Log.e(TAG, "SmoothStroker: Couldn't load circle bitmap"); }
//        mCircleBitsFrame = new Rect(0, 0, mCircleBits.getWidth(), mCircleBits.getHeight());

        BitmapFactory.Options opts = new BitmapFactory.Options();
        opts.inPreferredConfig = Bitmap.Config.ALPHA_8;
        if (mLowMem) { // let's see how this works in practice
            opts.inSampleSize = 4;
        }
        mAirbrushBits = BitmapFactory.decodeResource(res, R.drawable.airbrush_light, opts);
        if (mAirbrushBits == null) { Log.e(TAG, "SmoothStroker: Couldn't load airbrush bitmap"); }
        mAirbrushBitsFrame = new Rect(0, 0, mAirbrushBits.getWidth(), mAirbrushBits.getHeight());
        //Log.v(TAG, "airbrush: " + mAirbrushBitsFrame.right + "x" + mAirbrushBitsFrame.bottom);
        mFountainPenBits = BitmapFactory.decodeResource(res, R.drawable.fountainpen, opts);
        if (mFountainPenBits == null) { Log.e(TAG, "SmoothStroker: Couldn't load fountainpen bitmap"); }
        mFountainPenBitsFrame = new Rect(0, 0, mFountainPenBits.getWidth(), mFountainPenBits.getHeight());

        // set up individual strokers for each pointer
        mStrokes = new MarkersPlotter[MAX_POINTERS]; // TODO: don't bother unless hasSystemFeature(MULTITOUCH_DISTINCT)
        for (int i=0; i<mStrokes.length; i++) {
            mStrokes[i] = new MarkersPlotter();
        }
        
        mPressureCooker = new PressureCooker(getContext());

        setFocusable(true);
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            if (HWLAYER) {
                setLayerType(View.LAYER_TYPE_HARDWARE, null);
            } else if (SWLAYER) {
                setLayerType(View.LAYER_TYPE_SOFTWARE, null);
            } else {
                setLayerType(View.LAYER_TYPE_NONE, null);
            }
        }
        
        mWorkspacePaint = new Paint();
        mWorkspacePaint.setColor(0x40606060);

        mBlitPaint = new Paint();

        if (true) {
            mDebugPaints[0] = new Paint();
            mDebugPaints[0].setStyle(Style.STROKE);
            mDebugPaints[0].setStrokeWidth(2.0f);
            mDebugPaints[0].setARGB(255, 0, 255, 255);
            mDebugPaints[1] = new Paint(mDebugPaints[0]);
            mDebugPaints[1].setARGB(255, 255, 0, 128);
            mDebugPaints[2] = new Paint(mDebugPaints[0]);
            mDebugPaints[2].setARGB(255, 0, 255, 0);
            mDebugPaints[3] = new Paint(mDebugPaints[0]);
            mDebugPaints[3].setARGB(255, 30, 30, 255);
            mDebugPaints[4] = new Paint();
            mDebugPaints[4].setStyle(Style.FILL);
            mDebugPaints[4].setARGB(255, 128, 128, 128);
        }
    }
 

import android.app.ActivityManager; //导入方法依赖的package包/类
@TargetApi(11)
private static int getLargeMemoryClass(ActivityManager am) {
    return am.getLargeMemoryClass();
}
 

import android.app.ActivityManager; //导入方法依赖的package包/类
protected void onBaseInit() {
    isLowDevice = UIIViewImpl.isLowDevice();
    isHighDevice = UIIViewImpl.isHighDevice();

    try {
        ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        memoryClass = manager.getMemoryClass();
        largeMemoryClass = manager.getLargeMemoryClass();
    } catch (Exception e) {

    }
    //96 256
    L.e("RApplication -> memoryClass:" + memoryClass + "MB largeMemoryClass:" + largeMemoryClass + "MB");

    Utils.init(this);

         /*sp持久化库*/
    Hawk.init(this)
            .build();

        /*崩溃异常处理*/
    RCrashHandler.init(this);

    SkinHelper.init(this);

        /*Realm数据库初始化*/
    //RRealm.init(this, "r_jcenter.realm", true);

        /*Facebook图片加载库, 必须*/
    //Fresco.initialize(this);

    onInit();

    new Thread() {
        @Override
        public void run() {
            Debug.logTimeStart("RApplication 异步初始化:onAsyncInit()");
            onAsyncInit();
            Debug.logTimeEnd("RApplication 异步初始化结束:onAsyncInit()");
        }
    }.start();
}