Android動畫--佈局動畫 LayoutAnimation

LayoutTransition

相關的屬性值

APPEARING：當一個View在ViewGroup中出現時，對此View設置的動畫

CHANGE_APPEARING：當一個View在ViewGroup中出現時，對此View對其他View位置造成影響，對其他View設置的動畫。

DISAPPEARING： 當一個View在ViewGroup中消失時，對此View設置的動畫。

CHANGE_DISAPPEARING： 當一個View在ViewGroup中消失時，對此View對其他View位置造成影響，對其他View設置的動畫。

CHANGE： 不是由於View出現或消失造成對其他View位置造成影響，然後對其他View設置的動畫。

使用默認的屬性值定義的相關佈局動畫

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private Button button1;
    private GridLayout gridLayout;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        initListener();
        LayoutTransition layoutTransition = new LayoutTransition();
        layoutTransition.setAnimator(LayoutTransition.APPEARING, layoutTransition.getAnimator(LayoutTransition.APPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGING, layoutTransition.getAnimator(LayoutTransition.CHANGING));
        layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.DISAPPEARING));
        gridLayout.setLayoutTransition(layoutTransition);
    }

    private void initListener() {
        button1.setOnClickListener(this);
    }

    private void init() {
        button1 = (Button) findViewById(R.id.button1);
        gridLayout = (GridLayout) findViewById(R.id.gridLayout);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button1:
                TextView textView = new TextView(this);
                textView.setText("你這個小碧池");
                textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
                gridLayout.addView(textView,0);
                textView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        gridLayout.removeView(v);
                    }
                });
                break;
        }
    }
}

• 我們來看相關的代碼

LayoutTransition layoutTransition = new LayoutTransition();
        layoutTransition.setAnimator(LayoutTransition.APPEARING, layoutTransition.getAnimator(LayoutTransition.APPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_APPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING));
        layoutTransition.setAnimator(LayoutTransition.CHANGING, layoutTransition.getAnimator(LayoutTransition.CHANGING));
        layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, layoutTransition.getAnimator(LayoutTransition.DISAPPEARING));
        gridLayout.setLayoutTransition(layoutTransition);

• 這裏定義的是佈局動畫的各個屬性，都是使用的默認值，然後爲對應的gridLayout設定佈局動畫

                TextView textView = new TextView(this);
                textView.setText("你這個小碧池");
                textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
                gridLayout.addView(textView,0);
                textView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        gridLayout.removeView(v);
                    }
                });

• 這裏我們動態的添加TextView控件
• 同時爲TextView設置相應的點擊事件，當被點擊，就從gridLayout中移除出去
  

使用自定義屬性值定義的相關佈局動畫

• 代碼如下

public class SecActivity extends AppCompatActivity implements OnClickListener {

    private Button button_sec;
    private CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
    private GridLayout gridLayout;
    private int index;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sec);
        init();
    }

    private void init() {
        button_sec = (Button) findViewById(R.id.button_sec);
        button_sec.setOnClickListener(this);
        checkBox1 = (CheckBox) findViewById(R.id.checkBox);
        checkBox2 = (CheckBox) findViewById(R.id.checkBox2);
        checkBox3 = (CheckBox) findViewById(R.id.checkBox3);
        checkBox4 = (CheckBox) findViewById(R.id.checkBox4);
        gridLayout = (GridLayout) findViewById(R.id.gridLayout_sec);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button_sec:
                index++;
                Button button = new Button(this);
                button.setText("我是按鈕" + index);
                button.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
                button.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        gridLayout.setLayoutTransition(getLayoutTransition());
                        gridLayout.removeView(v);
                    }
                });
                gridLayout.setLayoutTransition(getLayoutTransition());
                gridLayout.addView(button, 0);
                break;
        }
    }

    //與使用自定義屬性最大的不同在於此處，我們分別爲APPEARING、DISAPPEARING指定不同的效果
    public LayoutTransition getLayoutTransition() {
        LayoutTransition layoutTransition = new LayoutTransition();
        ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(gridLayout, "scaleX", 1, 0, 1).setDuration(2000);
        ObjectAnimator objectAnimator2 = ObjectAnimator.ofFloat(gridLayout, "ScaleY", 1, 0, 1).setDuration(2000);
        if (checkBox1.isChecked()) {
            layoutTransition.setAnimator(LayoutTransition.APPEARING, objectAnimator);
        }
        if (checkBox2.isChecked()) {
            layoutTransition.setAnimator(LayoutTransition.DISAPPEARING, objectAnimator2);
        }
        if (checkBox3.isChecked()) {
            //設置當新控件添加後，受影響的四個上下左右的移動
            PropertyValuesHolder holderTop = PropertyValuesHolder.ofInt("top", 0, 1);
            PropertyValuesHolder holderBottom = PropertyValuesHolder.ofInt("bottom", 0, 1);
            PropertyValuesHolder holderLeft = PropertyValuesHolder.ofInt("left", 0, 1);
            PropertyValuesHolder holderRight = PropertyValuesHolder.ofInt("right", 0, 1);
            final ObjectAnimator objectAnimator1 = new ObjectAnimator().ofPropertyValuesHolder(this, holderTop, holderBottom, holderLeft, holderRight).setDuration(2000);
            objectAnimator1.addListener(new Animator.AnimatorListener() {
                @Override
                public void onAnimationStart(Animator animation) {
                }

                @Override
                public void onAnimationEnd(Animator animation) {
                    //這是設置其他子控件的顯示效果的代碼
                    View view = (View) ((ObjectAnimator) animation).getTarget();
                    //對其他的子控件進行設置，移動到相應的位置後的動畫，我這裏設置的是旋轉
                    view.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.add));

//                    1代表原來大小，即表示不改變大小，一般這個用不到
//                    view.setScaleX(1);
//                    view.setScaleY(1);
                }

                @Override
                public void onAnimationCancel(Animator animation) {

                }

                @Override
                public void onAnimationRepeat(Animator animation) {

                }
            });
            layoutTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING, objectAnimator1);
        }
        if (checkBox4.isChecked()) {
            //下面四個方法最好用ofInt，如果用ofFloat動畫會出錯，效果不理想，具體原因我也不太清楚
            PropertyValuesHolder holderTop = PropertyValuesHolder.ofInt("top", 0, 1);
            PropertyValuesHolder holderBottom = PropertyValuesHolder.ofInt("bottom", 0, 1);
            PropertyValuesHolder holderLeft = PropertyValuesHolder.ofInt("left", 0, 1);
            PropertyValuesHolder holderRight = PropertyValuesHolder.ofInt("right", 0, 1);
            final ObjectAnimator objectAnimator1 = new ObjectAnimator().ofPropertyValuesHolder(this, holderTop, holderBottom, holderLeft, holderRight).setDuration(2000);
            objectAnimator1.addListener(new Animator.AnimatorListener() {
                @Override
                public void onAnimationStart(Animator animation) {
                }

                @Override
                public void onAnimationEnd(Animator animation) {
                    //這是設置其他子控件的大小的代碼
                    View view = (View) ((ObjectAnimator) animation).getTarget();
                    //對其他的子控件進行設置，移動到相應的位置後的動畫，我這裏設置的是旋轉
                    view.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.add));

//                    1代表原來大小，即表示不改變大小，一般這個用不到
//                    view.setScaleX(1);
//                    view.setScaleY(1);
                }

                @Override
                public void onAnimationCancel(Animator animation) {

                }

                @Override
                public void onAnimationRepeat(Animator animation) {

                }
            });
            layoutTransition.setAnimator(LayoutTransition.CHANGE_APPEARING, objectAnimator1);
        }
        return layoutTransition;
    }
}

佈局動畫的使用

在xml文件中定義使用

• xml文件定義在res文件夾下新建的anim文件夾下
• translate.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="2000"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator">

    <translate
        android:fromXDelta="-100%"
        android:toXDelta="0"></translate>
</set>

• layoutanimation_my.xml
• 其中的delay=”0.5”，表示的是animation=”@anim/translate”對應的xml文件中的duration*delay的時間爲延時時間

<?xml version="1.0" encoding="utf-8"?>
<layoutAnimation xmlns:android="http://schemas.android.com/apk/res/android"
    android:animationOrder="normal"
    android:delay="0.5"
    android:animation="@anim/translate">
</layoutAnimation>

• 定義完畢xml文件後，我們就需要在佈局文件中進行引用就可以了

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1"
        android:layoutAnimation="@anim/layoutanimation_my"></ListView>

在代碼中定義使用

- 代碼大概就是上圖這樣的邏輯，這裏博主就偷下懶不再敲了，效果和上面的效果圖一致。