Android程序真退出与假退出后台运行详解

Android程序真退出与假退出后台运行详解2012-08-12 16:24 (分类:默认分类)

public void onBackPressed() {    AlertDialog.Builder builder = new Builder(LawdaquanActivity.this);    builder.setIcon(R.drawable.imagebutton5);    builder.setTitle("提示");    builder.setMessage("你真的要退出法律信息软件吗？");    builder.setPositiveButton("是",      new Android.content.DialogInterface.OnClickListener() {       @Override       public void onClick(DialogInterface dialog, int which) {        Intent i = new Intent(Intent.ACTION_MAIN);

      i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

      i.addCategory(Intent.CATEGORY_HOME);

      startActivity(i);

     }      });    builder.setNegativeButton("否",      new android.content.DialogInterface.OnClickListener() {       @Override       public void onClick(DialogInterface dialog, int which) {        dialog.dismiss();       }      });    builder.create().show();

 }

 

-------------真退出  退出应用程序的实现:可以自己写个方法,例如:

public void exitProgrames{

Intent startMain = new Intent(Intent.ACTION_MAIN);

startMain.addCategory(Intent.CATEGORY_HOME);

startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

startActivity(startMain);

android.os.Process.killProcess(android.os.Process.myPid());

 

--------------重写ONKEYDOWN  public boolean onKeyDown(int keyCode, KeyEvent event) {

  if (keyCode == KeyEvent.KEYCODE_BACK) {     new AlertDialog.Builder(this)       .setIcon(R.drawable.title)       .setTitle("退出软件")       .setMessage("是否退出法律文书软件")       .setPositiveButton("否",         new DialogInterface.OnClickListener() {

        @Override          public void onClick(DialogInterface dialog,            int which) {           // TODO Auto-generated method stub

        }         }).setNegativeButton("退出", new OnClickListener() {

      @Override        public void onClick(DialogInterface dialog, int which) {         // TODO Auto-generated method stub         finish();        }       }).create().show();    }

  else {     return super.onKeyDown(keyCode, event);

  }

  // TODO Auto-generated method stub    return super.onKeyDown(keyCode, event);   }

-----------假退出  Intent i = new Intent(Intent.ACTION_MAIN);

      i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

      i.addCategory(Intent.CATEGORY_HOME);

      startActivity(i);  finish();