How to Detect Lowmemory in android?

Question

My application has a lot of images and sometimes it crashes due to low memory. I wrote this function that I found on the developer site.

public void onLowM         


        

Answer 1

Along with onLowMemory() and onTrimMemory(), which monitor system memory, here's a way to monitor app memory. It uses Zsolt Safrany's answer at it's core.

private final float CHECK_MEMORY_FREQ_SECONDS = 3.0f;
private final float LOW_MEMORY_THRESHOLD_PERCENT = 5.0f; // Available %
private Handler memoryHandler_;

public void onCreate( Bundle savedInstanceState ) {

// Do Stuff...

 // Start Monitoring App Memory Availablity
    memoryHandler_ = new Handler();
    checkAppMemory();
}

public void checkAppMemory(){
    // Get app memory info
    long available = Runtime.getRuntime().maxMemory();
    long used = Runtime.getRuntime().totalMemory();

    // Check for & and handle low memory state
    float percentAvailable = 100f * (1f - ((float) used / available ));
    if( percentAvailable <= LOW_MEMORY_THRESHOLD_PERCENT )
        handleLowMemory();

    // Repeat after a delay
    memoryHandler_.postDelayed( new Runnable(){ public void run() {
        checkAppMemory();
    }}, (int)(CHECK_MEMORY_FREQ_SECONDS * 1000) );
}

public void handleLowMemory(){ 
    // Free Memory Here
}