如何以编程方式在Android中打开当前活动的屏幕截图？

debugcn 发表于 Dev

维杰乔杜里

当我使用移动设备和移动设备主屏幕时，请截屏。当我使用消息传递，所有应用程序以及手机屏幕上的所有内容时，也要考虑。

排序时，拍摄“移动跑步”屏幕的图像：

佛法

1-Create layout

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

    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        android:text="Create ScreenShot" />

    <ImageView
        android:id="@+id/sowscreenshot"
        android:layout_width="216dp"
        android:layout_height="360dp"
        android:layout_below="@+id/btn"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp" />

</RelativeLayout>

2-Create Activity

import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

    Button btn_screenshoot;
    int i = 0;
    ImageView imgv_showscreenshot;

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

        imgv_showscreenshot = (ImageView) findViewById(R.id.showscreenshot);
        btn_screenshoot = (Button) findViewById(R.id.btn);
        btn_screenshoot.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                View view = findViewById(R.id.relativelayout);
                view.setDrawingCacheEnabled(true);
                Bitmap bitmap = view.getDrawingCache();
                BitmapDrawable bitmapDrawable = new BitmapDrawable(bitmap);

// set screenshot bitmapdrawable to imageview
                imgv_showscreenshot.setBackgroundDrawable(bitmapDrawable);
                if (Environment.MEDIA_MOUNTED.equals(Environment
                        .getExternalStorageState())) {
// we check if external storage is available, otherwise
// display an error message to the user using Toast Message
                    File sdCard = Environment.getExternalStorageDirectory();
                    File directory = new File(sdCard.getAbsolutePath()
                            + "/ScreenShots");
                    directory.mkdirs();

                    String filename = "screenshot" + i + ".jpg";
                    File yourFile = new File(directory, filename);

                    while (yourFile.exists()) {
                        i++;
                        filename = "screenshot" + i + ".jpg";
                        yourFile = new File(directory, filename);
                    }

                    if (!yourFile.exists()) {
                        if (directory.canWrite()) {
                            try {
                                FileOutputStream out = new FileOutputStream(
                                        yourFile, true);
                                bitmap.compress(Bitmap.CompressFormat.PNG, 90,
                                        out);
                                out.flush();
                                out.close();
                                Toast.makeText(
                                        MainActivity.this,
                                        "File exported to /sdcard/ScreenShots/screenshot"
                                                + i + ".jpg",
                                        Toast.LENGTH_SHORT).show();
                                i++;
                            } catch (IOException e) {
                                e.printStackTrace();
                            }

                        }
                    }
                } else {
                    Toast.makeText(MainActivity.this,
                            "Sorry SD Card not available in your Device!",
                            Toast.LENGTH_SHORT).show();
                }

            }
        });

    }

}

3-Add permission to Manifest file

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

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