在我們進行一個網路訪問的過程的時候,我們需要大概1到2秒鐘的等待,所以我們給它一個動畫效果,當網路訪問成功的時候動畫隨之結束,給使用者一個良好的體驗效果.寫了一個簡單的Demo具體程式碼如下:

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private Button mBt;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mBt = (Button) findViewById(bt1);
        mBt.setOnClickListener(this
 
);
    }
    @Override
    public void onClick(View v) {
    switch (v.getId()){
        case R.id.bt1:
            Animal_Custom animal_custom = new Animal_Custom(this,null);
            animal_custom.show();
            startActivity(new Intent(MainActivity.this,TwoActivity.class));

    }
    }
}
 

在跳轉第二個頁面的時候之前先出現一個動畫效果,然後再跳轉,以為Intent跳轉非常快,所以顯示效果不太明顯,主要還是用於網路訪問的操作等待時間時使用的效果

public class Animal_Custom extends Dialog {
    private String data_text;
    private Context mContext;
    private ImageView mIv_show;
    private RelativeLayout mRl_ahow;

    public Animal_Custom(Context context, String text) {
        super
 
(context);
        this.data_text = text;
        this.mContext = context;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.animal_layout);
        initView();
    }

    private void initView() {
        mIv_show = (ImageView) findViewById(R.id.iv_show);
        mRl_ahow = (RelativeLayout) findViewById(R.id.rl_show);
        mIv_show.setBackgroundResource(R.drawable.Animal_Scale);
        AnimationDrawable background = (AnimationDrawable) mIv_show.getBackground();
        background.start();
        ScaleAnimation scaleAnimation = new ScaleAnimation(1.0f, 1.0f,
                0.0f, 1.0f, Animation.RELATIVE_TO_SELF,
                0.5f, Animation.RELATIVE_TO_SELF,
                0.5f);
        scaleAnimation.setDuration(200);
        mRl_ahow.startAnimation(scaleAnimation);
        Window window = this.getWindow();
        WindowManager.LayoutParams params = this.getWindow().getAttributes();
        window.setBackgroundDrawable(new BitmapDrawable());
        //設定dialog的對話方塊透明程度背景
        params.dimAmount = 0.5f;
        window.setAttributes(params);
        //點選以外的區域會不消失
        setCancelable(false);
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

        if (keyCode == KeyEvent.KEYCODE_BACK) {
            Animal_Custom.this.dismiss();
            return false;
        }else {
        return super.onKeyDown(keyCode, event);
    }
}
}

這是 Animal_Scale:

<animation-list xmlns:android="http://schemas.android.com/apk/res/android">

    <item
    android:drawable="@mipmap/r1"
    android:duration="50" />
    <item
        android:drawable="@mipmap/r2"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r3"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r4"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r5"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r6"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r7"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r8"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r9"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r10"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r11"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r12"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r13"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r14"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r15"
        android:duration="50" />
    <item
        android:drawable="@mipmap/r16"
        android:duration="50" />
</animation-list>

這樣就會出現一個旋轉的圖案了.