Android Text over image

Question

I have an imageView with an image, over that image I want to place a text. How can I achieve that?

Answer 1

That is how I did it and it worked exactly as you asked for inside a RelativeLayout:

<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relativelayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <ImageView
        android:id="@+id/myImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/myImageSouce" />

    <TextView
        android:id="@+id/myImageViewText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@id/myImageView"
        android:layout_alignTop="@id/myImageView"
        android:layout_alignRight="@id/myImageView"
        android:layout_alignBottom="@id/myImageView"
        android:layout_margin="1dp"
        android:gravity="center"
        android:text="Hello"
        android:textColor="#000000" />

</RelativeLayout>

Answer 2

The below code this will help you

public class TextProperty {
    private int heigt;                              //读入文本的行数
    private String []context = new String[1024];    //存储读入的文本

    /*
     *@parameter wordNum
     *
     */
    public TextProperty(int wordNum ,InputStreamReader in) throws Exception {
        int i=0;
        BufferedReader br = new BufferedReader(in);
        String s;
        while((s=br.readLine())!=null){
            if(s.length()>wordNum){
                int k=0;
                while(k+wordNum<=s.length()){
                    context[i++] = s.substring(k, k+wordNum);
                    k=k+wordNum;
                }
                context[i++] = s.substring(k,s.length());
            }
            else{
                context[i++]=s;
            }
        }
        this.heigt = i;
        in.close();
        br.close();
    }


    public int getHeigt() {
        return heigt;
    }

    public String[] getContext() {

        return context;
    }
}

public class MainActivity extends AppCompatActivity {

    private Button btn;
    private ImageView iv;
    private final int WORDNUM = 35;  //转化成图片时  每行显示的字数
    private final int WIDTH = 450;   //设置图片的宽度

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        iv = (ImageView) findViewById(R.id.imageView);
        btn = (Button) findViewById(R.id.button);

        btn.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                int x=5,y=10;
                try {
                    TextProperty tp = new TextProperty(WORDNUM, new InputStreamReader(getResources().getAssets().open("1.txt")));
                    Bitmap bitmap = Bitmap.createBitmap(WIDTH, 20*tp.getHeigt(), Bitmap.Config.ARGB_8888);
                    Canvas canvas = new Canvas(bitmap);
                    Paint paint = new Paint();
                    paint.setColor(Color.WHITE);
                    paint.setTextAlign(Paint.Align.LEFT);
                    paint.setTextSize(20f);

                    String [] ss = tp.getContext();
                    for(int i=0;i<tp.getHeigt();i++){
                        canvas.drawText(ss[i], x, y, paint);
                        y=y+20;
                    }

                    canvas.save(Canvas.ALL_SAVE_FLAG);
                    canvas.restore();
                    String path = Environment.getExternalStorageDirectory() + "/image.png";
                    System.out.println(path);
                    FileOutputStream os = new FileOutputStream(new File(path));
                    bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
                    //Display the image on ImageView.
                    iv.setImageBitmap(bitmap);
                    iv.setBackgroundColor(Color.BLUE);
                    os.flush();
                    os.close();
                }
                catch (Exception e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        });
    }
}```

Answer 3

There are many ways. You use RelativeLayout or AbsoluteLayout.

With relative, you can have the image align with parent on the left side for example and also have the text align to the parent left too... then you can use margins and padding and gravity on the text view to get it lined where you want over the image.