无法返回到活动系统设置后意图 [英] can't return to activity after System settings intent

查看：170 发布时间：2016/3/19 15:04:38 java android android-intent settings

本文介绍了无法返回到活动系统设置后意图的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

在我applicattion我需要去取消手机设置活动来激活GPS和想用这个code code回到我的应用程序：

意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）; startActivityForResult（意向）;

但是当我用它，我不能回到我的应用程序。当我pressed回来，我想这样的：

 意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
    startActivityForResult（意向，0）;

然后我打电话给所有类型的结果这个code

 公共无效的onActivityResult（INT申请code，INT结果code，意图X）{
    如果（要求code == 0）{
        如果（结果code == RESULT_CANCELED）{
            按钮B =（按钮）findViewById（R.id.button1）;
            b.setText（开）;
            b.setTextColor（0xff2d9ede）;
            意图K =新意图（getApplicationContext（），serve.class）;
            startService（K）;
        }
    }    如果（结果code == RESULT_FIRST_USER）{
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        意图K =新意图（getApplicationContext（），serve.class）;
        startService（K）;
    }    如果（结果code == RESULT_OK）{
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        意图K =新意图（getApplicationContext（），serve.class）;
        startService（K）;
    }
}
}

但是这也没有工作..The同样的事情发生（没有回到我的应用程序）..任何想法？ ...在此先感谢

这里是整个活动的code：

 公共类Layout2Activity延伸活动{
静态字符串username4;
私有静态最终诠释DIALOG_ALERT = 10;
私有静态最终诠释DIALOG_ALERT2 = 8;
公共布尔的onkeydown（INT键code，KeyEvent的事件）{
如果（event.getAction（）== KeyEvent.ACTION_DOWN）{
    开关（键code）{
    案例KeyEvent.KEY code_BACK：
        的ShowDialog（DIALOG_ALERT）;        返回true;
    }}
返回super.onKeyDown（键code，事件）;
}
布尔isGPSEnabled = FALSE;
布尔isNetworkEnabled = FALSE;
  公共无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.menu）;
     动作条动作条= getActionBar（）;
        actionBar.setDisplayHomeAsUpEnabled（假）;
    共享preferences名称= getShared preferences（用户，MODE_PRIVATE）;
    username4 = name.getString（名+ Passwardentry.usernomain，管理）;    共享preferences P = getShared preferences（用户，MODE_PRIVATE）;
    串号= p.getString（暴民+ Passwardentry.usernomain，请不分配。）;    共享preferences持续= getShared preferences（用户，MODE_PRIVATE）;
    共享preferences.Editor编辑= last.edit（）;
    edit.putString（最后一个数字号）;
    edit.commit（）;    TextView的K =（的TextView）findViewById（R.id.textView2）;
    k.setText（username4）;    TextView的T =（的TextView）findViewById（R.id.textView4）;
    t.setText（数）;
    如果（serve.isStarted）{
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        // TextView的N =（的TextView）findViewById（R.id.textView5）;
        // n.setTextColor（0x7fff00）;列城埃尔2alwan网扎赫拉？
        //n.setText（开）;    }其他{
        // TextView的N =（的TextView）findViewById（R.id.textView5）;
        // n.setTextColor（为0xFF0000）;
        //n.setText（关）;
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（关）;
        b.setTextColor（Color.rgb（139137137））;
    }}  公共无效userchange（视图v）{
    意图I =新意图（getApplicationContext（），setuserc.class）;
    startActivity（ⅰ）;}   公共无效servicebutton（查看V）{      如果（serve.isStarted）{
        // TextView的N =（的TextView）findViewById（R.id.textView5）;
        // n.setTextColor（为0xFF0000）;
        //n.setText（关）;
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（关）;
        b.setTextColor（Color.rgb（139137137））;
        意图I =新意图（getApplicationContext（），serve.class）;
        stopService（ⅰ）;    }其他{
        // TextView的N =（的TextView）findViewById（R.id.textView5）;
        // n.setTextColor（0x7fff00）;
        //n.setText（开）;
        的LocationManager的LocationManager =（的LocationManager）getSystemService（LOCATION_SERVICE）;            //获取GPS状态
            isGPSEnabled =的LocationManager
                    .isProviderEnabled（LocationManager.GPS_PROVIDER）;            //获取网络状态
            isNetworkEnabled =的LocationManager
                    .isProviderEnabled（LocationManager.NETWORK_PROVIDER）;            如果（isGPSEnabled＆安培;＆安培; isNetworkEnabled）{        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        意图K =新意图（getApplicationContext（），serve.class）;
        startService（K）;}
            其他{
                的ShowDialog（DIALOG_ALERT2）;            }    }}  公共无效readingsbutt（查看V）{
    意图I =新意图（getApplicationContext（），Readings.class）;
    startActivity（ⅰ）;
}    公共布尔onCreateOptionsMenu（菜单菜单）{
    。getMenuInflater（）膨胀（R.menu.activity_intro，菜单）;
    super.onCreateOptionsMenu（菜单）;
    // INT组1 = 1;
    //菜单项infoBtn = menu.add（group1,1,1，关于）;
    //菜单项MN = menu.add（组1，2，2，ARM）;
    // mn.setIcon（R.drawable.set）;
    // infoBtn.setIcon（R.drawable.set）;     // INT组2 = 2;
    //菜单项的appSettings = menu.add（group2,3,2，应用程序设置）;
    // appSettings.setIcon（R.drawable.set）;     返回true;
}  公共布尔onOptionsItemSelected（菜单项项）{
    如果（item.getItemId（）== R.id.menu_settings）{
        意图I =新意图（getApplicationContext（），settings.class）;
        startActivity（ⅰ）;
        overridePendingTransition（R.anim.slide_in，R.anim.slide_out）;
    }
    如果（item.getItemId（）== R.id.help）{
        意图I =新意图（getApplicationContext（），help.class）;
        startActivity（ⅰ）;
    }
    如果（item.getItemId（）== R.id.about）{
        意图I =新意图（getApplicationContext（），Info.class）;
        startActivity（ⅰ）;
    }
     //开关（item.getItemId（））{
    // 情况1：
    //突破;
    //案例2：
    //突破;
    //}    返回true;
}   @覆盖
    保护对话框onCreateDialog（INT ID）{
    开关（ID）{
    案例DIALOG_ALERT：
      //创建出AlterDialog
      建设者建设者=新AlertDialog.Builder（本）;
      builder.setMessage（你确定要退出？）;
      builder.setCancelable（真）;
      builder.setPositiveButton（否，新OkOnClickListener（））;
      builder.setNegativeButton（是，新CancelOnClickListener（））;
      AlertDialog对话框= builder.create（）;
      dialog.show（）;
    案例DIALOG_ALERT2：
          //创建出AlterDialog
          建设者builder2 =新AlertDialog.Builder（本）;
          builder2.setMessage（无可用位置服务，请激活网络和GPS卫星）;
          builder2.setCancelable（真）;
          builder2.setPositiveButton（取消，新OkOnClickListener2（））;
          builder2.setNegativeButton（设置，新CancelOnClickListener2（））;
          AlertDialog dialog2 = builder2.create（）;
          dialog2.show（）;
    }
    返回super.onCreateDialog（ID）;
  }    私人final类CancelOnClickListener工具
      DialogInterface.OnClickListener {
    公共无效的onClick（DialogInterface对话，诠释它）{        的setResult（0）;
        完（）;
        System.exit（0）; // /埃尔2aaady
    }}
    私人final类OkOnClickListener工具
     DialogInterface.OnClickListener {
     公共无效的onClick（DialogInterface对话，诠释它）{  }
    }    私人final类CancelOnClickListener2工具
    DialogInterface.OnClickListener {
  公共无效的onClick（DialogInterface对话，诠释它）{
     意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
    startActivityForResult（意向，0）;   }}
  私人final类OkOnClickListener2工具
 DialogInterface.OnClickListener {
公共无效的onClick（DialogInterface对话，诠释它）{}
}公共无效的onActivityResult（INT申请code，INT结果code，意图X）{
    如果（要求code == 0）{
        如果（结果code == RESULT_CANCELED）{
            按钮B =（按钮）findViewById（R.id.button1）;
            b.setText（开）;
            b.setTextColor（0xff2d9ede）;
            意图K =新意图（getApplicationContext（），serve.class）;
            startService（K）;
        }
    }    如果（结果code == RESULT_FIRST_USER）{
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        意图K =新意图（getApplicationContext（），serve.class）;
        startService（K）;
    }    如果（结果code == RESULT_OK）{
        按钮B =（按钮）findViewById（R.id.button1）;
        b.setText（开）;
        b.setTextColor（0xff2d9ede）;
        意图K =新意图（getApplicationContext（），serve.class）;
        startService（K）;
    }
  }
 }

解决方案

下面为我工作。

 包com.example.test;进口android.os.Bundle;
进口android.provider.Settings;
进口android.app.Activity;
进口android.content.Intent;
进口android.util.Log;
进口android.view.Menu;
进口android.view.View;
进口android.view.View.OnClickListener;
进口android.widget.Button;公共类MainActivity延伸活动{
布尔firstTime = TRUE;
@覆盖
保护无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.activity_main）;
    Log.i（测试，的onCreate）;
    Button按钮=（按钮）findViewById（R.id.button1）;
    button.setOnClickListener（新OnClickListener（）{        @覆盖
    公共无效的onClick（查看为arg0）{
        意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
        startActivity（意向）;
        }
    }）;
}@覆盖
保护无效onResume（）{
    super.onResume（）;
    Log.i（测试，onResume）;
    如果（firstTime）{
    Log.i（测试，这是第一次）;
    firstTime = FALSE;
    }    其他{
    Log.i（测试，这不是第一次了）;    }}
@覆盖
公共布尔onCreateOptionsMenu（菜单菜单）{
    //充气菜单;如果是present这增加了项目操作栏。
    。getMenuInflater（）膨胀（R.menu.activity_main，菜单）;
    返回true;
}

}

In my applicattion i need to go to de settings activity of the phone to activate GPS and want to return to my application using this code code:

Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(intent);

but when I used it I couldn't return to my app. when I pressed back so I tried this :

 Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
    startActivityForResult(intent, 0);

then I called all types of result in this code

 public void onActivityResult(int requestCode, int resultCode, Intent x){
    if(requestCode == 0){
        if(resultCode == RESULT_CANCELED){
            Button b = (Button)findViewById(R.id.button1);
            b.setText("ON");
            b.setTextColor(0xff2d9ede);
            Intent k = new Intent(getApplicationContext(), serve.class);
            startService(k);    
        }
    }

    if(resultCode == RESULT_FIRST_USER){
        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        Intent k = new Intent(getApplicationContext(), serve.class);
        startService(k);    
    }

    if(resultCode == RESULT_OK){
        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        Intent k = new Intent(getApplicationContext(), serve.class);
        startService(k);    
    }
}
}

but this also didn't work ..The same happened (didn't go back to my app).. any Ideas ?? ... thanks in advance

here is the code of the whole activity:

public class Layout2Activity extends Activity {
static String username4 ;
private static final int DIALOG_ALERT = 10;
private static final int DIALOG_ALERT2 = 8;
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
        showDialog(DIALOG_ALERT);

        return true;
    }

}
return super.onKeyDown(keyCode, event);
}
boolean isGPSEnabled = false;


boolean isNetworkEnabled = false;
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.menu);
     ActionBar actionBar = getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(false);


    SharedPreferences name = getSharedPreferences("user", MODE_PRIVATE);
    username4 = name.getString("name"+Passwardentry.usernomain,"Admin");

    SharedPreferences p = getSharedPreferences("user", MODE_PRIVATE);
    String number = p.getString("mob"+Passwardentry.usernomain, "please assign no.");

    SharedPreferences last = getSharedPreferences("user", MODE_PRIVATE);
    SharedPreferences.Editor edit = last.edit();
    edit.putString("last number", number);
    edit.commit();

    TextView k = (TextView) findViewById(R.id.textView2);
    k.setText(username4);

    TextView t = (TextView) findViewById(R.id.textView4);
    t.setText(number);
    if (serve.isStarted) {
        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        //TextView n = (TextView) findViewById(R.id.textView5);
        // n.setTextColor(0x7fff00); leh el 2alwan mesh zahra ??
        //n.setText("  On  ");

    } else {
        //TextView n = (TextView) findViewById(R.id.textView5);
        // n.setTextColor(0xff0000);
        //n.setText("  Off  ");
        Button b = (Button)findViewById(R.id.button1);
        b.setText("OFF");
        b.setTextColor(Color.rgb( 139,137,137   ));
    }



}

  public void userchange(View v) {
    Intent i = new Intent(getApplicationContext(), setuserc.class);
    startActivity(i);

}

   public void servicebutton(View V) {

      if (serve.isStarted) {
        //TextView n = (TextView) findViewById(R.id.textView5);
        // n.setTextColor(0xff0000);
        //n.setText("  Off  ");
        Button b = (Button)findViewById(R.id.button1);
        b.setText("OFF");
        b.setTextColor(Color.rgb( 139,137,137   ));
        Intent i = new Intent(getApplicationContext(), serve.class);
        stopService(i);

    } else {
        //TextView n = (TextView) findViewById(R.id.textView5);
        // n.setTextColor(0x7fff00);
        //n.setText("  On  ");


        LocationManager locationManager = (LocationManager)    getSystemService(LOCATION_SERVICE);

            // getting GPS status
            isGPSEnabled = locationManager
                    .isProviderEnabled(LocationManager.GPS_PROVIDER);

            // getting network status
            isNetworkEnabled = locationManager
                    .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

            if(isGPSEnabled && isNetworkEnabled){

        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        Intent k = new Intent(getApplicationContext(), serve.class);
        startService(k);}
            else {
                showDialog(DIALOG_ALERT2);



            } 

    }

}

  public void readingsbutt(View V) {
    Intent i = new Intent(getApplicationContext(), Readings.class);
    startActivity(i);
}

    public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.activity_intro, menu);
    super.onCreateOptionsMenu(menu);
    // int group1 = 1;
    // MenuItem infoBtn = menu.add(group1,1,1,"About");
    // MenuItem mn = menu.add(group1, 2, 2, "arm");
    // mn.setIcon(R.drawable.set);
    // infoBtn.setIcon(R.drawable.set);

     //int group2=2; 
    // MenuItem appSettings = menu.add(group2,3,2,"Application Settings");
    // appSettings.setIcon(R.drawable.set);



     return true;
}

  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.menu_settings) {
        Intent i = new Intent(getApplicationContext(), settings.class);
        startActivity(i);
        overridePendingTransition(R.anim.slide_in, R.anim.slide_out);
    }
    if (item.getItemId() == R.id.help) {
        Intent i = new Intent(getApplicationContext(), help.class);
        startActivity(i);
    }
    if (item.getItemId() == R.id.about) {
        Intent i = new Intent(getApplicationContext(), Info.class);
        startActivity(i);
    }
     //switch(item.getItemId()) {
    // case 1:
    //    break;
    //  case 2:
    //    break;
    // }

    return true;
}



   @Override
    protected Dialog onCreateDialog(int id) {
    switch (id) {
    case DIALOG_ALERT:
      // Create out AlterDialog
      Builder builder = new AlertDialog.Builder(this);
      builder.setMessage("Are you sure you want to Quit ?");
      builder.setCancelable(true);
      builder.setPositiveButton("NO", new OkOnClickListener());
      builder.setNegativeButton("Yes", new CancelOnClickListener());
      AlertDialog dialog = builder.create();
      dialog.show();


    case DIALOG_ALERT2:
          // Create out AlterDialog
          Builder builder2 = new AlertDialog.Builder(this);
          builder2.setMessage("No location service available please activate network and satellite GPS ");
          builder2.setCancelable(true);
          builder2.setPositiveButton("Cancel", new OkOnClickListener2());
          builder2.setNegativeButton("Settings", new CancelOnClickListener2());
          AlertDialog dialog2 = builder2.create();
          dialog2.show();
    }
    return super.onCreateDialog(id);
  }

    private final class CancelOnClickListener implements
      DialogInterface.OnClickListener {
    public void onClick(DialogInterface dialog, int which) {

        setResult(0);
        finish();
        System.exit(0);// /el 2aaady


    }}
    private final class OkOnClickListener implements
     DialogInterface.OnClickListener {
     public void onClick(DialogInterface dialog, int which) {



  }
    }

    private final class CancelOnClickListener2 implements
    DialogInterface.OnClickListener {
  public void onClick(DialogInterface dialog, int which) {
     Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
    startActivityForResult(intent, 0);



   }}
  private final class OkOnClickListener2 implements
 DialogInterface.OnClickListener {
public void onClick(DialogInterface dialog, int which) {



}
}

public void onActivityResult(int requestCode, int resultCode, Intent x){
    if(requestCode == 0){
        if(resultCode == RESULT_CANCELED){
            Button b = (Button)findViewById(R.id.button1);
            b.setText("ON");
            b.setTextColor(0xff2d9ede);
            Intent k = new Intent(getApplicationContext(), serve.class);
            startService(k);    
        }
    }

    if(resultCode == RESULT_FIRST_USER){
        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        Intent k = new Intent(getApplicationContext(), serve.class);
        startService(k);    
    }

    if(resultCode == RESULT_OK){
        Button b = (Button)findViewById(R.id.button1);
        b.setText("ON");
        b.setTextColor(0xff2d9ede);
        Intent k = new Intent(getApplicationContext(), serve.class);
        startService(k);    
    }
  }
 }

解决方案

Below works for me.

package com.example.test;

import android.os.Bundle;
import android.provider.Settings;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
boolean firstTime = true;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Log.i("test", "onCreate");
    Button button = (Button)findViewById(R.id.button1);
    button.setOnClickListener(new OnClickListener(){

        @Override
    public void onClick(View arg0) {
        Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
        startActivity(intent);
        }
    });
}

@Override
protected void onResume(){
    super.onResume();
    Log.i("test", "onResume");
    if (firstTime){
    Log.i("test", "it's the first time");
    firstTime = false;
    }

    else{
    Log.i("test", "it's not the first time");

    }

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

}

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