Програмен код за приложения на Android
Android custom loader – за зареждане
Публикувано от Ivelin Pavlov в Android Код, Код на 12 ноември 2012г.
Статична снимка за зареждане в Андроид (Loader).
Можете да скривате и показвате когато си поискате зареждането. Това става чрез функциите startLoading() и stopLoading().
<RelativeLayout xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/RelativeLayout1" android:layout_width="match_parent" android:layout_height="match_parent" > <RelativeLayout android:id="@+id/loaderLayout" android:layout_width="fill_parent" android:layout_height="match_parent" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="@color/menuBackground" android:clickable="true" android:visibility="gone" > <ImageView android:id="@+id/imageView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:contentDescription="@string/loading" android:src="@drawable/loader" /> </RelativeLayout> </RelativeLayout>
ImageView loaderImageView; View loaderLayout; RotateAnimation animation; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); loaderImageView = (ImageView) findViewById(R.id.imageView1); loaderImageView.setDrawingCacheEnabled(true); loaderImageView.setDrawingCacheQuality(loaderImageView.DRAWING_CACHE_QUALITY_HIGH); animation = new RotateAnimation(0f, 355f,Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f); animation .setInterpolator(new LinearInterpolator()); animation .setRepeatCount(Animation.INFINITE); animation .setDuration(2000); loaderLayout = findViewById(R.id.loaderLayout); startLoading(); DoSomething(); stopLoading(); } protected void startLoading() { loaderLayout.setVisibility(View.VISIBLE); loaderImageView.startAnimation(animation); } protected void stoptLoading() { loaderLayout.setVisibility(View.GONE); // Later.. stop the animation loaderImageView.setAnimation(null); } protected void doSomething() { //TODO something };
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