google 给出一个截屏录屏的方法5.0以上 需要onActivityResult()里的intent参数
1、startActivityForResult(mMediaProjectionManager.createScreenCaptureIntent(),REQUEST_MEDIA_PROJECTION);
2、在onActivityResult里的
setUpMediaProjection();
setUpVirtualDisplay();
/*
* Copyright (C) The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* /licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.screencapture;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.hardware.display.DisplayManager;
import android.hardware.display.VirtualDisplay;
import android.media.projection.MediaProjection;
import android.media.projection.MediaProjectionManager;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.Surface;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.Toast;
import com.mon.logger.Log;
/**
* Provides UI for the screen capture.
*/
public class ScreenCaptureFragment extends Fragment implements View.OnClickListener {
private static final String TAG = "ScreenCaptureFragment";
private static final String STATE_RESULT_CODE = "result_code";
private static final String STATE_RESULT_DATA = "result_data";
private static final int REQUEST_MEDIA_PROJECTION = 1;
private int mScreenDensity;
private int mResultCode;
private Intent mResultData;
private Surface mSurface;
private MediaProjection mMediaProjection;
private VirtualDisplay mVirtualDisplay;
private MediaProjectionManager mMediaProjectionManager;
private Button mButtonToggle;
private SurfaceView mSurfaceView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (savedInstanceState != null) {
mResultCode = savedInstanceState.getInt(STATE_RESULT_CODE);
mResultData = savedInstanceState.getParcelable(STATE_RESULT_DATA);
}
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_screen_capture, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
mSurfaceView = (SurfaceView) view.findViewById(R.id.surface);
mSurface = mSurfaceView.getHolder().getSurface();
mButtonToggle = (Button) view.findViewById(R.id.toggle);
mButtonToggle.setOnClickListener(this);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Activity activity = getActivity();
DisplayMetrics metrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
mScreenDensity = metrics.densityDpi;
mMediaProjectionManager = (MediaProjectionManager)
activity.getSystemService(Context.MEDIA_PROJECTION_SERVICE);
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (mResultData != null) {
outState.putInt(STATE_RESULT_CODE, mResultCode);
outState.putParcelable(STATE_RESULT_DATA, mResultData);
}
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.toggle:
if (mVirtualDisplay == null) {
startScreenCapture();
} else {
stopScreenCapture();
}
break;
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_MEDIA_PROJECTION) {
if (resultCode != Activity.RESULT_OK) {
Log.i(TAG, "User cancelled");
Toast.makeText(getActivity(), R.string.user_cancelled, Toast.LENGTH_SHORT).show();
return;
}
Activity activity = getActivity();
if (activity == null) {
return;
}
Log.i(TAG, "Starting screen capture");
mResultCode = resultCode;
mResultData = data;
setUpMediaProjection();
setUpVirtualDisplay();
}
}
@Override
public void onPause() {
super.onPause();
stopScreenCapture();
}
@Override
public void onDestroy() {
super.onDestroy();
tearDownMediaProjection();
}
private void setUpMediaProjection() {
mMediaProjection = mMediaProjectionManager.getMediaProjection(mResultCode, mResultData);
}
private void tearDownMediaProjection() {
if (mMediaProjection != null) {
mMediaProjection.stop();
mMediaProjection = null;
}
}
private void startScreenCapture() {
Activity activity = getActivity();
if (mSurface == null || activity == null) {
return;
}
if (mMediaProjection != null) {
setUpVirtualDisplay();
} else if (mResultCode != 0 && mResultData != null) {
setUpMediaProjection();
setUpVirtualDisplay();
} else {
Log.i(TAG, "Requesting confirmation");
// This initiates a prompt dialog for the user to confirm screen projection.
startActivityForResult(
mMediaProjectionManager.createScreenCaptureIntent(),
REQUEST_MEDIA_PROJECTION);
}
}
private void setUpVirtualDisplay() {
Log.i(TAG, "Setting up a VirtualDisplay: " +
mSurfaceView.getWidth() + "x" + mSurfaceView.getHeight() +
" (" + mScreenDensity + ")");
mVirtualDisplay = mMediaProjection.createVirtualDisplay("ScreenCapture",
mSurfaceView.getWidth(), mSurfaceView.getHeight(), mScreenDensity,
DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,
mSurface, null, null);
mButtonToggle.setText(R.string.stop);
}
private void stopScreenCapture() {
if (mVirtualDisplay == null) {
return;
}
mVirtualDisplay.release();
mVirtualDisplay = null;
mButtonToggle.setText(R.string.start);
}
}
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