设备

Question

我在android中创建一个简单的动画。只需要使用以下代码将一些ImageView从1点移动到屏幕上的第2点。 img_animation是ImageView。

void StartAnimationOne()
    {
        m_StartAnimationId = 1;
        TranslateAnimation animation = new TranslateAnimation(20.0f, 400.0f, 500.0f, 500.0f);
        animation.setDuration(m_TotalAnimationTime);
        animation.setRepeatCount(0);
        animation.setRepeatMode(0);
        animation.setFillAfter(true);
        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                //m_StartAnimationId = 2;
                //StartThreadOne();
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });

        Matrix matrix = new Matrix();
        img_animation.setScaleType(ImageView.ScaleType.MATRIX);   //required
        //matrix.postRotate((float) 180f, img_animation.getPivotX(), img_animation.getPivotY());
        matrix.postRotate(0f, img_animation.getDrawable().getBounds().width() / 2,
                img_animation.getDrawable().getBounds().height() / 2);
        img_animation.setImageMatrix(matrix);

        img_animation.startAnimation(animation);
    }

但是当它在设备上运行时，动画看起来非常生涩。 跟随警告发出警告。

  

I / Choreographer：跳过37帧！应用程序可能在其主线程上做了太多工作。“

我的MainActivity是

import android.graphics.Matrix;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;

public class testinglayout extends AppCompatActivity {

    //Skipped 37 frames!  The application may be doing too much work on its main thread.

    ImageView img_animation;

    int m_TotalAnimationTime = 10000;
    int m_StartAnimationId = 1;
    Handler handler;
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_testinglayout);

        GetReferences();
        //StartThreadOne();

        //new AnimationClass().execute();

        StartFirst();
    }

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

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    void GetReferences()
    {
        img_animation = (ImageView) findViewById(R.id.glowbg);
    }

    void StartFirst()
    {
        runOnUiThread(new Runnable() {
            public void run() {
                //If there are stories, add them to the table
                StartAnimationOne();
            }
        });
    }
    void StartAnimationOne()
    {
        m_StartAnimationId = 1;
        TranslateAnimation animation = new TranslateAnimation(20.0f, 400.0f, 500.0f, 500.0f);
        animation.setDuration(m_TotalAnimationTime);
        animation.setRepeatCount(0);
        animation.setRepeatMode(0);
        animation.setFillAfter(true);
        animation.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {
                //m_StartAnimationId = 2;
                //StartThreadOne();
            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });

        Matrix matrix = new Matrix();
        img_animation.setScaleType(ImageView.ScaleType.MATRIX);   //required
        //matrix.postRotate((float) 180f, img_animation.getPivotX(), img_animation.getPivotY());
        matrix.postRotate(0f, img_animation.getDrawable().getBounds().width() / 2,
                img_animation.getDrawable().getBounds().height() / 2);
        img_animation.setImageMatrix(matrix);

        img_animation.startAnimation(animation);
    }


}

有人可以帮忙吗？

Answer 1

尝试使用.footer代替android模拟器到device并检查应用程序的UI。 如果您认为应用程序在主线程上工作太多，请尝试使用debug长时间使用功能，这也需要大量资源。 和编舞者跳过37帧意味着你的一些动画无法正常工作尝试更新AVD并尝试更高级的Android手机品尝。