Question

您好我正在尝试学习android工作室java编程，我正在制作简单的音频播放器一个列表视图和一个播放按钮，所以我需要帮助音频播放在另一个活动，如何设置onitemclicklistener播放音频在另一个活动请帮助我

public void doStuff() {

    listView = (ListView) findViewById(R.id.listview);
    arrayList = new ArrayList<>();
    getVideo();
    adapter= new ArrayAdapter<String>(this, 
    android.R.layout.simple_list_item_1, arrayList);
    listView.setAdapter(adapter);

 }

//这里写的代码是什么，在另一个活动中播放音频只是简单的没有标题只显示播放按钮

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView adapterView, View view, int i, 
        long l) {
        }

    });
}

这是我的第二个活动，我想只添加一个按钮播放，我是新的所以请理解这个

   public class Main2Activity extends AppCompatActivity {
   MediaPlayer mp;
   Button bt;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main2);
    bt = (Button)findViewById(R.id.play);


    Intent intent=getIntent();
    int position  = (int) intent.getLongExtra("position", 0);
    if(position!=0){
        //get your song from the position variable 'position' received here
        //and you can start playing your song
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mp.isPlaying()){
                    mp.pause();
                }else {
                    mp.start();
                }

Answer 1

您可以在onItemClick

中向其他活动发送意图

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView adapterView, View view, int i, 
    long l) {
        Intent intent = new Intent(getActivity(), YouOtherActivity.class);
        intent.putExtra("position", i);
        startActivity(intent);
    }

});

并在你的其他活动的onCreate中获得该位置并播放该歌曲

protected void onCreate(Bundle savedInstanceState) {
 .
 .
 .    
 Intent intent=getIntent();
 int postion = intent.getLongExtra("position", 0);
 if(position!=0){
    //get your song from the position variable 'position' received here
   //and you can start playing your song
 }
}

OnItemClickListener在另一个活动中播放音频

1 个答案: