Android

Question

我正在努力做到这一点，当有人点击默认头像图片时，它会将他们发送到一个单独的 activity，其中将包含一个 select 离子头像可供选择。用户将 select 这些化身之一，然后我想将用户发送回 Main activity，并将化身 ImageView 设置为他们 select 编辑的那个。我用文字做了这个，但没有用图像，我已经到了困惑的地步。谁能帮我实现这个目标？

// First View
public class MainActivity extends AppCompatActivity {
    ImageView imageViewSelectAvatarLocal;
    int requestCodeImageBrownHairedFemale = 100;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imageViewSelectAvatarLocal = findViewById(R.id.imageViewdefaultAvatar);
        imageViewSelectAvatarLocal.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, SelectAvatarActivity.class);
                intent.putExtra("Brown Haired Woman", 001);
                startActivityForResult(intent, 100);
            }
        });
    }

    @SuppressLint("ResourceType")
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == SelectAvatarActivity.RESULT_OK && data != null){
            if(requestCode == requestCodeImageBrownHairedFemale) {
                //...
            }
        }
    }
}
// Second View
public class SelectAvatarActivity extends AppCompatActivity {
    ImageView imageViewBrownHairedWoman
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_select_avatar);
        imageViewBrownHairedWoman = findViewById(R.id.imageViewBrownHairFemale);
        imageViewBrownHairedWoman.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.getExtras();
                setResult(MainActivity.RESULT_OK, intent);
                finish();
            }
        });

    }
}

Answer 1

使用数组怎么样？你有一些头像图片。所以你可以做

int[] avatars = {R.drawable.avatar0, ... };

在第二个视图中，单击其中一张头像图片（每个图片都有位置），将位置发送到 MainActivity 并使用 onActivityResult 方法获取值。

例如，

public class MainActivity extends AppCompatActivity {
    int[] avatars = {R.drawable.avatar0, ... };
    ImageView imageViewSelectAvatarLocal;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imageViewSelectAvatarLocal = findViewById(R.id.imageViewdefaultAvatar);
        imageViewSelectAvatarLocal.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, SelectAvatarActivity.class);
                startActivityForResult(intent, 100);
            }
        });
    }

    @SuppressLint("ResourceType")
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == SelectAvatarActivity.RESULT_OK && data != null){
            if(requestCode == 100) {
              int pos = data.getIntExtra("avatar", 0);
              imageViewSelectAvatarLocal.setImageResource(avatars[pos]);
            //...
            }
        }
    }
}

// Second View
public class SelectAvatarActivity extends AppCompatActivity {
    ImageView avatar0, avatar1, ...;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_select_avatar);
        avatar0 = findViewById(R.id.avatar1);
        avatar0.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.putExtra("avatar", 0);
                setResult(MainActivity.RESULT_OK, intent);
                finish();
            }
        });

        //...
    }
}

Android - 使用 "startActivityonResultFor" 从另一个 ImageView 接收图像

Android - Receiving image from another ImageView with "startActivityonResultFor"

onactivityresult