Android中將View儲存為圖片的簡單實現
阿新 • • 發佈:2019-01-31
今天看到這篇部落格,想簡單的嘗試一下
遂新建專案,xml如下
預覽如下<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:background="#ffcccc" android:orientation="vertical" > <EditText android:id="@+id/et1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="20dp" /> <TextView android:id="@+id/tv1" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/et1" android:layout_marginTop="20dp" android:text="Hello World!" /> <Button android:id="@+id/bt1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/tv1" android:layout_centerHorizontal="true" android:layout_marginTop="20dp" android:onClick="click" android:text="Show" /> </RelativeLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" > <ImageView android:background="#eeee00" android:id="@+id/iv1" android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/ic_launcher" /> </LinearLayout> </LinearLayout>
以下是邏輯程式碼
package com.example.view2img; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Canvas; import android.os.Bundle; import android.view.View; import android.widget.ImageView; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void click(View v){ ImageView iv = (ImageView) findViewById(R.id.iv1); Bitmap bm = createViewBitmap((View) v.getParent()); iv.setImageBitmap(bm); } public Bitmap createViewBitmap(View v) { Bitmap bitmap = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); v.draw(canvas); return bitmap; } }
執行效果如下,下面的imageView顯示的上面的View的內容,最後如果要儲存到手機上也簡單