Activity退出应用程序

退出应用程序：

① 递归退出(XML页面太简单，就不贴出代码了)       

② 栈退出：Application:多个组件之间数据共享（全局）

 

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.zking.application.MyApplication;

public class MainActivity extends AppCompatActivity {

    private TextView tv_main_text;
    private MyApplication myApplication;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv_main_text = (TextView) findViewById(R.id.tv_main_text);
        tv_main_text.setText("当前Activity实例："+this+"\n当前任务栈："+this.getTaskId());

        //获取MyApplication
        myApplication = (MyApplication) getApplication();
        myApplication.add(this);

    }
    public void jumpMain(View view){
        Intent intent=new Intent(this,MainActivity.class);
        startActivity(intent);
    }
    public void jumpB(View view){
        Intent intent=new Intent(this,BActivity.class);
        startActivity(intent);
        //startActivityForResult(intent,0x101);
    }
    public void exit(View view){
       //finish();//退出当前的Activity
        //System.exit(0);
        myApplication.exit();
    }

//    @Override
//    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//        super.onActivityResult(requestCode, resultCode, data);
//        exit(null);
//    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        Log.i("test","onDestroy");
    }
}

  

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import com.zking.application.MyApplication;

public class BActivity extends AppCompatActivity {

    private MyApplication myApplication;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_b);
        TextView tv_b_text= (TextView) findViewById(R.id.tv_b_text);
        tv_b_text.setText("当前Activity地址："+this+"\nTaskId:"+this.getTaskId());
        //获取MyApplication
        myApplication = (MyApplication) getApplication();
        myApplication.add(this);
    }
    public void jumpMain(View view){
        Intent intent=new Intent(this,MainActivity.class);
        startActivity(intent);
    }
    public void exit(View view){
        //finish();
         //System.exit(0);  //退出当前Activity
        myApplication.exit();
    }
}