我如何訪問Android上的相機膠捲/照片？

Question

我很難找到一種方法來打開用戶相機膠捲/照片庫，點擊Android上的按鈕。我正在尋找的解決方案包括訪問相機膠捲/照片廚房，允許用戶選擇圖像，將所選圖像保存到文件，然後最後將該文件保存到數據庫（如parse.com）。請提前幫忙，謝謝！

請參閱下面的鏈接。我希望實現與IOS上的實現類似。 https://drive.google.com/file/d/0B4jjwQsKhqZRcU1FX05xeThlS0U/view?usp=sharing

Answer 1

請參考此給定的代碼。它完美地解決你的問題。 它調用圖像庫，並保存圖像並再次顯示。

package br.liveo.ndrawer; 
 

 
import android.content.Context; 
 
import android.content.Intent; 
 
import android.content.SharedPreferences; 
 
import android.graphics.Bitmap; 
 
import android.net.Uri; 
 
import android.os.Build; 
 
import android.os.Bundle; 
 
import android.provider.MediaStore; 
 
import android.support.v7.app.ActionBar; 
 
import android.support.v7.app.ActionBarActivity; 
 
import android.view.Menu; 
 
import android.view.MenuItem; 
 
import android.view.View; 
 
import android.widget.ImageView; 
 
import android.widget.RelativeLayout; 
 
import android.widget.TextView; 
 

 
import java.io.IOException; 
 

 
import br.liveo.navigationliveo.NavigationLiveo; 
 

 
public class Profile extends ActionBarActivity { 
 

 
    private RelativeLayout editLayout; 
 
    private SharedPreferences preferences; 
 
    private boolean edit = false; 
 
    private ImageView profilePic; 
 

 
    @Override 
 
    protected void onCreate(Bundle savedInstanceState) { 
 
     super.onCreate(savedInstanceState); 
 
     setContentView(R.layout.profile); 
 

 
     ActionBar actionBar = getSupportActionBar(); 
 
     actionBar.setHomeButtonEnabled(true); 
 
     actionBar.setDisplayHomeAsUpEnabled(true); 
 

 
     editLayout = (RelativeLayout) findViewById(R.id.profile_edit); 
 
     editLayout.setVisibility(View.INVISIBLE); 
 

 
     preferences = getApplicationContext().getSharedPreferences("User", Context.MODE_PRIVATE); 
 
     String userName = preferences.getString("userName", "No User"); 
 
     String userEmail = preferences.getString("userEmail", getString(R.string.samplemail)); 
 
     String userPhoto = preferences.getString("userPhoto", "NULL"); 
 
     String userAbout = preferences.getString("userAbout", getResources().getString(R.string.about)); 
 

 
     TextView name = (TextView) findViewById(R.id.userName); 
 
     name.setText(userName); 
 

 
     TextView email = (TextView) findViewById(R.id.mail); 
 
     email.setText(userEmail); 
 

 
     TextView about = (TextView) findViewById(R.id.about); 
 
     about.setText(userAbout); 
 

 
     profilePic = (ImageView) findViewById(R.id.userPhoto); 
 
     if (userPhoto.equals("NULL")) { 
 
      profilePic.setBackgroundResource(R.drawable.ic_no_user); 
 
     } else { 
 
      //Bitmap bitmap = Profile.decodeBase64(userPhoto); 
 
      Bitmap bitmap; 
 
      try { 
 
       bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), Uri.parse(userPhoto)); 
 
      } catch (IOException e) { 
 
       profilePic.setBackgroundResource(R.drawable.ic_no_user); 
 
       return; 
 
      } 
 
      profilePic.setImageBitmap(bitmap); 
 
     } 
 
    } 
 

 
    @Override 
 
    public boolean onCreateOptionsMenu(Menu menu) { 
 
     getMenuInflater().inflate(R.menu.profile_edit, menu); 
 
     return true; 
 
    } 
 

 
    @Override 
 
    public boolean onOptionsItemSelected(MenuItem item) { 
 
     switch (item.getItemId()) { 
 
      case R.id.profile_edit: 
 
       if (edit) { 
 
        saveProfile(); 
 
        edit = false; 
 
        finish(); 
 
       } else { 
 
        item.setIcon(R.drawable.ic_action_accept); 
 
        edit = true; 
 
        profileEdit(); 
 
       } 
 
       return true; 
 
      default: 
 
       finish(); 
 
       return super.onOptionsItemSelected(item); 
 
     } 
 
    } 
 

 
    private void saveProfile() { 
 
     TextView name = (TextView) findViewById(R.id.edit_name); 
 
     TextView mail = (TextView) findViewById(R.id.edit_mail); 
 
     TextView about = (TextView) findViewById(R.id.edit_about); 
 

 
     SharedPreferences.Editor editor = preferences.edit(); 
 

 
     if (name.getText().toString().length() > 0) 
 
      editor.putString("userName", name.getText().toString()); 
 
     if (mail.getText().toString().length() > 0) 
 
      editor.putString("userEmail", mail.getText().toString()); 
 
     if (about.getText().toString().length() > 0) 
 
      editor.putString("userAbout", about.getText().toString()); 
 

 
     editor.apply(); 
 
    } 
 

 
    private void profileEdit() { 
 
     RelativeLayout layout = (RelativeLayout) findViewById(R.id.profile_display); 
 
     layout.setVisibility(View.INVISIBLE); 
 
     editLayout.setVisibility(View.VISIBLE); 
 
    } 
 

 
    public void pickUser(View view) { 
 
     Intent intent; 
 

 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { 
 
      intent = new Intent(Intent.ACTION_OPEN_DOCUMENT); 
 
      intent.addCategory(Intent.CATEGORY_OPENABLE); 
 
     } else { 
 
      intent = new Intent(Intent.ACTION_GET_CONTENT); 
 
     } 
 

 
     intent.setType("image/*"); 
 
     startActivityForResult(intent, 3645); 
 
    } 
 

 
    @Override 
 
    protected void onActivityResult(int requestCode, int resultCode, Intent resultData) { 
 

 
     if (requestCode == 3645 && resultCode == NavigationLiveo.RESULT_OK && resultData != null) { 
 

 
      Uri selectedImage = resultData.getData(); 
 
      profilePic.setImageURI(selectedImage); 
 
      SharedPreferences preferences = getSharedPreferences("User", Context.MODE_PRIVATE); 
 
      SharedPreferences.Editor editor = preferences.edit(); 
 
      editor.putString("userPhoto", selectedImage.toString()); 
 
      editor.apply(); 
 
     } 
 
    } 
 
}