Question

我有一个以动画开头的应用程序，然后我们转移到另一个（P1）活动。但是，如果我从p1按回按钮然后我回到动画（LoadActivity），如果我现在按回按钮然后我应该去应用程序管理器，但我会回到P1活动，就像从p1到LoadActivity的循环从LoadActivity到P1

LoadActivity.java

public class LoadActivity extends Activity  {
boolean doubleBackToExitPressedOnce=false;
    ImageView im;
    Animation rotate;
    private Handler mHandler;
    private Runnable mRunnable;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.load);
        im = (ImageView) findViewById(R.id.load_icon);
        rotate = AnimationUtils.loadAnimation(getApplicationContext(),
                R.anim.load_page);
        rotate.setInterpolator(new LinearInterpolator());
        im.startAnimation(rotate);

    mHandler = new Handler();
    mRunnable = new Runnable() {
        @Override
        public void run() {
            Intent nextPageIntent = new Intent(getApplicationContext(),
                    P1.class);
            startActivity(nextPageIntent);

        }
    };

    mHandler.postDelayed(mRunnable, 3000);
}

    public void onBackPressed() {
         Toast.makeText(this, "Please click BACK again to exit", Toast.LENGTH_SHORT).show();
        mHandler.removeCallbacksAndMessages(mRunnable);
        android.os.Process.killProcess(android.os.Process.myPid());


        }

P1.java

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.p1);
        int currentOrientation = getResources().getConfiguration().orientation;
        if (currentOrientation == Configuration.ORIENTATION_LANDSCAPE) {

             context=this;
           LayoutInflater inflater = LayoutInflater.from(context);

            View view = inflater.inflate(R.layout.lay_inflate_land,null);
            RelativeLayout f=(RelativeLayout)findViewById(R.id.iv_p1);
            f.addView(view);
        }
        else {

             context=this;
           LayoutInflater inflater = LayoutInflater.from(context);

            View view = inflater.inflate(R.layout.lay_inflate,null);
            RelativeLayout f=(RelativeLayout)findViewById(R.id.iv_p1);
            f.addView(view);
        }



        button = (Button)findViewById(R.id.let_start_p2);



        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent nextPageIntent = new Intent(getApplicationContext(), P2.class);
                startActivity(nextPageIntent);
            }
        });


    }
    @Override
    public void onBackPressed() {
        Intent nextPageIntent = new Intent(getApplicationContext(), LoadActivity.class);
        startActivity(nextPageIntent);
        }

Answer 1

尝试替换此代码：

@Override
public void onBackPressed() {
  Intent nextPageIntent = new Intent(getApplicationContext(), LoadActivity.class);
  startActivity(nextPageIntent);
  finish();
}

后退按钮无法正常工作

1 个答案: