Question

我正在制作一个生日许愿应用程序，一切正常，但是我希望用户可以从图库中选择图像，并将其传递到第二个活动，当计时器确定后，我在其中使用了报价栏。

我的MainActivity

public class MainActivity extends AppCompatActivity {

    CircularView circularViewWithTimer;
    EditText entertime;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        getWindow().setFlags(
                WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
        );

        entertime = (EditText) findViewById(R.id.Txt_time);

        circularViewWithTimer = findViewById(R.id.circular_view);

        CircularView.OptionsBuilder builderWithTimer =
                new CircularView.OptionsBuilder()
                        .shouldDisplayText(true)
                        .setCounterInSeconds(15)
                        .setCircularViewCallback(new CircularViewCallback() {
                            @Override
                            public void onTimerFinish() {
                               String name = entertime.getText().toString();
                                Intent i = new Intent(MainActivity.this, Bday_page.class);
                               i.putExtra("text", name);
                                startActivity(i);
                                finish();
                            }

                            @Override
                            public void onTimerCancelled() {

                                // Will be called if stopTimer is called
                                Toast.makeText(MainActivity.this, "CircularCallback: Timer Cancelled ", Toast.LENGTH_SHORT).show();


                            }
                        });

        circularViewWithTimer.setOptions(builderWithTimer);
    }

    public void btn_pause(View view) {
        circularViewWithTimer.pauseTimer();
    }

    public void btn_start(View view) {
        MediaPlayer mMediaPlayer;

        if(entertime.getText().toString().isEmpty()){
            Toast.makeText(this, "Enter name of bday boy", Toast.LENGTH_SHORT).show();
        }
        else {
            circularViewWithTimer.startTimer();

            mMediaPlayer = new MediaPlayer();
            mMediaPlayer = MediaPlayer.create(this,R.raw.count);
            mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mMediaPlayer.setLooping(true);
            mMediaPlayer.start();
        }
    }

    public void btn_resume(View view) {
        circularViewWithTimer.resumeTimer();
    }
}

我的第二项活动

public class Bday_page extends AppCompatActivity {

    TextView nameuser;
    MediaPlayer mMediaPlayer;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_bday_page);
       nameuser = (TextView)findViewById(R.id.txt_imagename);

        getWindow().setFlags(
                WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS,
                WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
        );

        mMediaPlayer = new MediaPlayer();
        mMediaPlayer = MediaPlayer.create(this, R.raw.happybady);
        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mMediaPlayer.setLooping(true);
        mMediaPlayer.start();

        Intent i = getIntent();
        nameuser.setText(i.getStringExtra("text"));


    }
}

Answer 1

首先，您需要在清单中请求存储权限

 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

在那之后，在MainActivity中使像这样的onTimerFinish方法

@Override
                    public void onTimerFinish() {
  Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    startActivityForResult(intent,1777);
}

现在您从Galary索取图像，然后将onActivityResult方法添加到您的主要活动中以接收图像

 @Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
if ( resultCode == Activity.RESULT_OK) {
        if (requestCode == CAMERA_REQUEST) {
 Uri uri = data.getData();
            Cursor cursor;
String[] filePathColumn = { MediaStore.Images.Media.DATA };
                    cursor = getContentResolver().query(uri,
                            filePathColumn, null, null, null);
                    cursor.moveToFirst();

                    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                    picturePath = cursor.getString(columnIndex);
                    cursor.close();
String name = entertime.getText().toString();
                        Intent i = new Intent(MainActivity.this, Bday_page.class);
                       i.putExtra("text", name);
                       i.putExtra("imagePath",picturePath )
                        startActivity(i);
                        finish();
}}}

现在您将获得所选图像的路径并将其发送到下一个活动然后在您的第二个活动中收到这样的图片

Intent i = getIntent();
nameuser.setText(i.getStringExtra("text"));
String imagePath = i.getStringExtra("imagePath") //add these

现在您在新活动中有了图像路径，就可以使用它来做您想做的事情

如何从画廊中选择图像并将其传递给另一个活动，

1 个答案: