如何定义按钮显示与动画一一出现？

Question

我的活动中有 9 个按钮，我使用右推动画在创建时显示我的按钮，我将持续时间更改为设置显示，所以我有 9 个具有不同持续时间的 animation.xml（例如从 1000 到 5000）。

我还必须在活动中重复 3 行代码 9 次，

final Button b = (Button)findViewById(R.id.Button06);
    Animation anim=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in);
    b.startAnimation(anim);

所以，我需要知道有没有更简单的方法可以用更少的代码来制作类似的东西？ 例如，使用1个animation.xml并定义按钮来运行动画一个接一个？！

我的完整代码：

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.Button;

public class MainActivity extends ActionBarActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Button b = (Button)findViewById(R.id.Button06);
        Animation anim=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in);
        b.startAnimation(anim);

        final Button b1 = (Button)findViewById(R.id.Button03);
        Animation anim1=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in1);
        b1.startAnimation(anim1);

        final Button b2 = (Button)findViewById(R.id.button1);
        Animation anim2=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in2);
        b2.startAnimation(anim2);

        final Button b3 = (Button)findViewById(R.id.Button08);
        Animation anim3=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in3);
        b3.startAnimation(anim3);

        final Button b4 = (Button)findViewById(R.id.Button04);
        Animation anim4=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in4);
        b4.startAnimation(anim4);

        final Button b5 = (Button)findViewById(R.id.Button01);
        Animation anim5=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in5);
        b5.startAnimation(anim5);

        final Button b6 = (Button)findViewById(R.id.Button07);
        Animation anim6=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in6);
        b6.startAnimation(anim6);

        final Button b7 = (Button)findViewById(R.id.Button05);
        Animation anim7=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in7);
        b7.startAnimation(anim7);

        final Button b8 = (Button)findViewById(R.id.Button02);
        Animation anim8=AnimationUtils.loadAnimation(MainActivity.this, R.anim.push_right_in8);
        b8.startAnimation(anim8);


        b.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                startButtonAnimation(b);
            }
        });

    }
    public void startButtonAnimation(Button btn){
        Animation shake = AnimationUtils.loadAnimation(this, R.anim.shake);
        btn.setAnimation(shake);
        btn.startAnimation(shake);

        shake.setAnimationListener(new AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                startActivity(new Intent(getApplicationContext(), Activity2.class));
                overridePendingTransition(R.anim.animation, R.anim.animation2);
            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

Answer 1

是的，你可以创建方法

private void buttonAnim(int buttonId, long duration){
        Button b = (Button) findViewById(buttonId);
        Animation anim=AnimationUtils.loadAnimation(MainActivity.this,your_anim_id);
        anim.setDuration(duration);
        b.startAnimation(anim);
}

并用它来调用你的动画：

buttonAnim(R.anim.Button06, 1000);

此外，您可以将按钮放在数组中并循环执行，如下面的代码所示：

int[] buttonsArrays = new int { 
                   R.anim.Button01,
                   R.anim.Button02,
                   R.anim.Button06,
                   ...
                   }

int[] durations = new int { 
                   1000,
                   5000,
                   1000,
                   ...
                   }

在你的代码中：

  for(int index=0; index <buttonsArrays.length; index++){
      buttonAnim(buttonsArrays[index],durations[index]); 
  }

但请记住数组的长度必须相同

或者您可以使用Pair 对象，如下面的代码所示：

    Pair<Integer, Long>[] pairs = new Pair[]{
            new Pair(R.id.Button01, 1000l),
            new Pair(R.id.Button02, 5000l),
            ...
    };

在你的代码中：

  for(Pair<Integer,Long> pair : pairs ){
      buttonAnim(pair.first,pair.second); 
  }

最省钱了

编辑

请找出我对你们班级的建议：

public class MainActivity extends ActionBarActivity {

    private final ButtonSupport[] buttonSupports = new ButtonSupport[]{
            new ButtonSupport(R.id.Button06,1000l, YourClassActivity.class),
            new ButtonSupport(R.id.Button03, 2000l,YourClassActivity2.class),
            new ButtonSupport(R.id.button1, 3000l,YourClassActivity3.class),
            new ButtonSupport(R.id.Button08, 4000l,YourClassActivity4.class),
            new ButtonSupport(R.id.Button04, 5000l,YourClassActivity5.class),
            new ButtonSupport(R.id.Button01, 6000l,YourClassActivity6.class),
            new ButtonSupport(R.id.Button07, 7000l,YourClassActivity7.class),
            new ButtonSupport(R.id.Button05, 8000l,YourClassActivity8.class),
            new ButtonSupport(R.id.Button02, 9000l,YourClassActivity9.class),
    };

    private static class ButtonSupport{
        final int buttonId;
        final long duration;
        final Class<? extends Activity> clazz;

        ButtonSupport(int buttonId, long duration, Class<? extends Activity> clazz) {
            this.buttonId = buttonId;
            this.duration = duration;
            this.clazz = clazz;
        }
    }
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        for (ButtonSupport buttonSupport : buttonSupports) {
            animButton(buttonSupport);
        }

    }

    private void animButton(final ButtonSupport buttonSupport) {
        final Button button = (Button) findViewById(buttonSupport.buttonId);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startButtonAnimation(v, buttonSupport.clazz);
            }
        });
        Animation anim = AnimationUtils.loadAnimation(MainActivity.this, R.anim.your_animation);
        anim.setDuration(buttonSupport.duration);
        button.startAnimation(anim);
    }

    public void startButtonAnimation(View btn, final Class<? extends  Activity> clazz) {
        Animation shake = AnimationUtils.loadAnimation(this, R.anim.shake);
        btn.setAnimation(shake);
        btn.startAnimation(shake);

        shake.setAnimationListener(new Animation.AnimationListener() {

            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                startActivity(new Intent(getApplicationContext(), clazz));
                overridePendingTransition(R.anim.animation, R.anim.animation2);
            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}